fix: fall back to client map when icon cannot be found

[n3ps]

Description

Some custom networks (e.g. Chiliz) do not have icons in the CDN. This PR adds onError handling for native assetIds, fall back to a local mapping.

Depends on MetaMask/core#9833

Changelog

CHANGELOG entry: null

Related issues

Fixes:

Related: MetaMask/core#9833

Manual testing steps

1. With core#9833 (or equivalent) producing eip155:88888/erc20:0x000…000 for Chiliz natives, open Activity on Chiliz.
2. Confirm the chili icon appears after the CDN miss (may briefly flash ?).
3. Confirm a random ERC-20 with a missing CDN icon still shows ?, not the chain native image.

Screenshots/Recordings

Before

N/A

After

N/A

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

Made with Cursor

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
88.9% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[metamask-ci]

Builds ready [36ca0e3]

• ⚠️ Make sure the build is safe before downloading and running this build.
  • Please do not use these builds with accounts that contain significant real money.
  • Beware the security risks of cache poisoning.
• Webpack builds: chrome, firefox
• Webpack builds (beta): chrome, firefox
• Webpack builds (flask): chrome, firefox
• Webpack builds (test): chrome, firefox
• Webpack builds (test-flask): chrome, firefox
• bundle size: Bundle Size Stats
• bundle analyzer: Bundle Analyzer
• interaction-benchmark: Interaction Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts

⚡ Performance Benchmarks (Total: 🟢 12 pass · 🟡 12 warn · 🔴 0 fail)

Baseline (latest main): 171ed20 | Date: 7/28/2026 | Pipeline: 31562057502 | Baseline logs

Interaction Benchmarks · Samples: 5

Benchmark	chrome-webpack	firefox-webpack
loadNewAccount [Sentry log · main/release]	🟢 [CI log]	🟡 [CI log] 🟡 load_new_account
confirmTx [Sentry log · main/release]	🟢 [CI log]	🟡 [CI log]
bridgeUserActions [Sentry log · main/release]	🟢 [CI log]	🟡 [CI log]

📈 Results compared to the previous 5 runs on main

• ↓ loadNewAccount/inp: -17%
• ↓ loadNewAccount/fcp: -13%
• ↓ loadNewAccount/lcp: -18%
• ↓ confirmTx/longTaskTotalDuration: -29%
• ↑ confirmTx/longTaskMaxDuration: +12%
• ↓ confirmTx/tbt: -51%
• ↑ confirmTx/lcp: +807%
• ↓ bridgeUserActions/bridge_load_page: -10%
• ↑ bridgeUserActions/bridge_load_asset_picker: +27%
• ↓ bridgeUserActions/longTaskCount: -100%
• ↓ bridgeUserActions/longTaskTotalDuration: -100%
• ↓ bridgeUserActions/longTaskMaxDuration: -100%
• ↓ bridgeUserActions/tbt: -100%
• ↓ bridgeUserActions/fcp: -15%
• ↓ bridgeUserActions/lcp: -13%
• ↑ loadNewAccount/load_new_account: +22%
• ↑ loadNewAccount/total: +22%
• ↓ loadNewAccount/inp: -17%
• ↓ loadNewAccount/fcp: -46%
• ↑ loadNewAccount/lcp: +1411%
• ↓ confirmTx/longTaskCount: -100%
• ↓ confirmTx/longTaskTotalDuration: -100%
• ↓ confirmTx/longTaskMaxDuration: -100%
• ↓ confirmTx/tbt: -100%
• ↓ confirmTx/inp: -32%
• ↓ confirmTx/fcp: -59%
• ↑ confirmTx/lcp: +1543%
• ↑ bridgeUserActions/bridge_load_page: +213%
• ↑ bridgeUserActions/bridge_load_asset_picker: +70%
• ↓ bridgeUserActions/bridge_search_token: -10%
• ↓ bridgeUserActions/longTaskCount: -100%
• ↓ bridgeUserActions/longTaskTotalDuration: -100%
• ↓ bridgeUserActions/longTaskMaxDuration: -100%
• ↓ bridgeUserActions/tbt: -100%
• ↑ bridgeUserActions/total: +21%
• ↓ bridgeUserActions/inp: -23%
• ↑ bridgeUserActions/lcp: +1144%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)

• 🟡 loadNewAccount/LCP: p75 2.6s
• 🟡 confirmTx/LCP: p75 2.8s
• 🟡 bridgeUserActions/FCP: p75 1.9s

Startup Benchmarks · Samples: 100

Benchmark	chrome-webpack	firefox-webpack
startupStandardHome [Sentry log · main/release]	🟢 [CI log]	🟡 [CI log] 🟡 loadScripts
startupPowerUserHome [Sentry log · main/release]	–	🟡 [CI log]

📈 Results compared to the previous 5 runs on main

• ↑ startupStandardHome/firstPaint: +12%
• ↓ startupStandardHome/firstReactRender: -99%
• ↓ startupStandardHome/numNetworkReqs: -17%
• ↑ startupStandardHome/domInteractive: +11%
• ↑ startupStandardHome/backgroundConnect: +14%
• ↓ startupStandardHome/firstReactRender: -98%
• ↑ startupStandardHome/setupStore: +13%
• ↓ startupStandardHome/numNetworkReqs: -13%
• ↑ startupPowerUserHome/load: +17%
• ↑ startupPowerUserHome/domContentLoaded: +17%
• ↑ startupPowerUserHome/domInteractive: +11%
• ↑ startupPowerUserHome/backgroundConnect: +16%
• ↓ startupPowerUserHome/firstReactRender: -99%
• ↑ startupPowerUserHome/initialActions: +11%
• ↑ startupPowerUserHome/loadScripts: +14%
• ↑ startupPowerUserHome/setupStore: +295%
• ↑ startupPowerUserHome/fcp: +12%
• ↑ startupPowerUserHome/lcp: +19%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)

• 🟡 startupPowerUserHome/LCP: p75 3.4s

User Journey Benchmarks · Samples: 5 · mock API

Benchmark	chrome-webpack	firefox-webpack
onboardingImportWallet [Sentry log · main/release]	🟡 [CI log] 🟡 total	🟢 [CI log]
onboardingNewWallet [Sentry log · main/release]	🟢 [CI log]	🟡 [CI log] 🟡 total
assetDetails [Sentry log · main/release]	🟢 [CI log]	🟢 [CI log]
solanaAssetDetails [Sentry log · main/release]	🟢 [CI log]	🟡 [CI log] 🟡 assetClickToPriceChart
importSrpHome [Sentry log · main/release]	🟢 [CI log]	🟢 [CI log]
sendTransactions [Sentry log · main/release]	🟡 [CI log]	🟡 [CI log]
swap [Sentry log · main/release]	🟡 [CI log] 🟡 total	🟡 [CI log]

📈 Results compared to the previous 5 runs on main

• ↓ onboardingImportWallet/srpButtonToSrpForm: -11%
• ↓ onboardingImportWallet/confirmSrpToPwForm: -16%
• ↓ onboardingImportWallet/pwFormToMetricsScreen: -15%
• ↓ onboardingImportWallet/metricsToWalletReadyScreen: -28%
• ↓ onboardingImportWallet/doneButtonToHomeScreen: -92%
• ↓ onboardingImportWallet/openAccountMenuToAccountListLoaded: -56%
• ↓ onboardingImportWallet/longTaskCount: -86%
• ↓ onboardingImportWallet/longTaskTotalDuration: -96%
• ↓ onboardingImportWallet/longTaskMaxDuration: -92%
• ↓ onboardingImportWallet/tbt: -100%
• ↓ onboardingImportWallet/total: -82%
• ↓ onboardingNewWallet/skipBackupToMetricsScreen: -11%
• ↓ onboardingNewWallet/agreeButtonToOnboardingSuccess: -16%
• ↓ onboardingNewWallet/doneButtonToAssetList: -73%
• ↓ onboardingNewWallet/longTaskCount: -38%
• ↓ onboardingNewWallet/longTaskTotalDuration: -58%
• ↓ onboardingNewWallet/longTaskMaxDuration: -39%
• ↓ onboardingNewWallet/tbt: -85%
• ↓ onboardingNewWallet/total: -70%
• ↑ solanaAssetDetails/assetClickToPriceChart: +216%
• ↓ solanaAssetDetails/longTaskCount: -100%
• ↓ solanaAssetDetails/longTaskTotalDuration: -100%
• ↓ solanaAssetDetails/longTaskMaxDuration: -100%
• ↓ solanaAssetDetails/tbt: -100%
• ↑ solanaAssetDetails/total: +216%
• ↓ importSrpHome/loginToHomeScreen: -23%
• ↓ importSrpHome/homeAfterImportWithNewWallet: -24%
• ↓ importSrpHome/longTaskCount: -58%
• ↓ importSrpHome/longTaskTotalDuration: -54%
• ↓ importSrpHome/longTaskMaxDuration: -43%
• ↓ importSrpHome/tbt: -68%
• ↓ importSrpHome/total: -23%
• ↓ importSrpHome/inp: -43%
• ↓ importSrpHome/fcp: -14%
• ↓ importSrpHome/lcp: -13%
• ↑ importSrpHome/cls: +484%
• ↑ sendTransactions/selectTokenToSendFormLoaded: +26%
• ↓ sendTransactions/reviewTransactionToConfirmationPage: -97%
• ↓ sendTransactions/longTaskCount: -100%
• ↓ sendTransactions/longTaskTotalDuration: -100%
• ↓ sendTransactions/longTaskMaxDuration: -100%
• ↓ sendTransactions/tbt: -100%
• ↓ sendTransactions/total: -93%
• ↓ sendTransactions/inp: -19%
• ↑ sendTransactions/fcp: +13%
• ↓ sendTransactions/lcp: -61%
• ↑ sendTransactions/cls: +171%
• ↑ swap/openSwapPageFromHome: +199%
• ↑ swap/fetchAndDisplaySwapQuotes: +139%
• ↑ swap/longTaskCount: +167%
• ↑ swap/longTaskTotalDuration: +108%
• ↑ swap/longTaskMaxDuration: +31%
• ↑ swap/tbt: +26%
• ↑ swap/total: +144%
• ↓ swap/lcp: -71%
• ↓ swap/cls: -92%

🌐 Core Web Vitals — 🟢 good · 🟡 needs improvement · 🔴 poor (web.dev thresholds)

• 🟡 sendTransactions/FCP: p75 1.9s
• 🟡 swap/FCP: p75 1.9s
• 🟡 solanaAssetDetails/FCP: p75 2.0s
• 🔴 sendTransactions/INP: p75 744ms
• 🟡 sendTransactions/FCP: p75 2.0s
• 🔴 swap/INP: p75 784ms
• 🟡 swap/FCP: p75 1.8s

Dapp Page Load Benchmarks · Samples: 100

Benchmark	chrome-webpack
dappPageLoad [Sentry log · main/release]	🟢 [CI log]

📈 Results compared to the previous 5 runs on main

• ↓ dappPageLoad/pageLoadTime: -57%
• ↓ dappPageLoad/firstPaint: -41%
• ↓ dappPageLoad/firstContentfulPaint: -41%

Bundle size diffs [🚨 Warning! Bundle size has increased!]

• background: 105 Bytes (0%)
• ui: 1.64 KiB (0.01%)
• common: 0 Bytes (0%)
• other: 0 Bytes (0%)
• contentScripts: 0 Bytes (0%)
• zip: 1021 Bytes (0%)