Update SQLite refresh script to support the SQLite monorepo

[JanJakes]

Summary

• The sqlite-database-integration repository was restructured into a monorepo (WordPress/sqlite-database-integration#334). The plugin now needs to be built from a subpackage.
• The refresh script now shallow-clones the SQLite repository and runs its build script (bin/build-sqlite-plugin-zip.sh) to produce a self-contained plugin ZIP with the driver symlink resolved.
• For older tagged versions (pre-monorepo), the script falls back to downloading the GitHub archive, which still works correctly.

Test plan

• Verified npx nx run playground-wordpress-builds:bundle-sqlite-database succeeds for both trunk and v2.1.16
• Verified the trunk ZIP contains the correct flat plugin structure with db.copy, load.php, and a real wp-includes/database/ directory
• Verified the v2.1.16 ZIP is identical to the previous version (84 KB)
• Verify Playground boots correctly with the new trunk ZIP (run npm run dev and confirm SQLite works)

[Copilot]

Pull request overview

Updates the SQLite integration plugin refresh flow to work with the upstream sqlite-database-integration monorepo by building a ZIP from a shallow clone, while keeping a fallback path for older (pre-monorepo) releases.

Changes:

• Switch refresh script from downloading GitHub archives to shallow-cloning and running the upstream build script when available
• Add fallback to archive download for older tags that don’t contain the build script
• Update the expected ZIP size for trunk in module details

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 5 comments.

File	Description
packages/playground/wordpress-builds/src/sqlite-database-integration/get-sqlite-driver-module-details.ts	Updates expected size metadata for the trunk ZIP
packages/playground/wordpress-builds/build/refresh-sqlite-integration-plugin.js	Implements clone+build flow for monorepo versions with a legacy archive-download fallback

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[JanJakes]

I'll merge this one to re-enable the SQLite refresh job.