ci: deploy xmtpd-network-watcher to testnet and testnet-staging

[mkysel]

Summary

• Pass the existing network_watcher_image prepare output to the terraform-deployer for both testnet-staging and testnet deploy jobs
• Completes wiring started in ci: build xmtpd-network-watcher image #1984 (build) and feat: add network-watcher for global sync state observability #1979 (feature), which added the image but not the deploy step

Test plan

• CI builds and pushes xmtpd-network-watcher image
• Terraform workspace receives the new network_watcher_image variable on deploy to testnet-staging
• Terraform workspace receives the new network_watcher_image variable on deploy to testnet

🤖 Generated with Claude Code

Note

Deploy xmtpd-network-watcher to testnet and testnet-staging

Passes the network_watcher_image variable to the Terraform deployer in both the testnet-staging and testnet deploy steps in build-xmtpd.yml.

^{Macroscope summarized 1b306c7.}

[macroscopeapp]

Approvability

Verdict: Approved

This is a minor CI/CD configuration change that adds a new deployment variable for network-watcher to testnet and testnet-staging environments. The change is additive, follows existing patterns, targets only non-production environments, and is made by the file's designated code owner.

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