Show feedback when deploy actions fail

[arjunkomath]

Summary

• show an error toast when starting a deployment or build fails
• use action-specific fallback messages when no error message is available
• keep rollout-cache refresh failures from being presented as deployment failures

Verification

• npx biome check --write components/service/details/pending-changes-banner.tsx
• ./node_modules/.bin/tsc --noEmit
• Kimi K3 review: approved with no blocking findings

Test limitation

• ./node_modules/.bin/vitest run tests/deploy-service-revision.test.ts could not start in the orb because it has Node 20.9.0, while the installed Vitest/Rolldown toolchain requires a newer Node runtime (node:util.styleText is unavailable).

[github-actions]

React Doctor found no issues. 🎉

⚠️ Warning: .github/workflows/react-doctor.yml is configured incorrectly. See below to fix.

React Doctor compares against main to report only the issues this pull request introduces. This run couldn't complete that comparison (usually a shallow CI checkout with no merge base), so it listed every issue in the changed files, including ones that already existed on main.

Add fetch-depth: 0 to the actions/checkout step in .github/workflows/react-doctor.yml so the checkout includes the history React Doctor needs:

 jobs:
   react-doctor:
     steps:
       - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0

       - uses: millionco/react-doctor@v2

To silence this warning, set silence-missing-baseline-warning: true on the React Doctor action.

_{Reviewed by React Doctor for commit dedfa4a.}