[ci] Complete implementation of safe-to-fail CI steps (#5210)

* [ci] Make Playwright deploy step safe to fail

Add continue-on-error: true to Deploy to Cloudflare Pages step to prevent
Cloudflare API issues from blocking essential testing processes.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* [ci] Make lint-and-format comment steps safe to fail

Add continue-on-error: true to PR comment steps in lint workflow:
- Comment on PR about auto-fix (line 63)
- Comment on PR about manual fix needed (line 76)

This prevents GitHub API permission errors from blocking
essential linting processes while maintaining comment functionality.

---------

Co-authored-by: Claude <noreply@anthropic.com>

.github/workflows/test-ui.yaml

@@ -182,6 +182,7 @@ jobs:
       - name: Deploy to Cloudflare Pages (${{ matrix.browser }})
         id: cloudflare-deploy
         if: always()
+        continue-on-error: true
         run: |
           # Retry logic for wrangler deploy (3 attempts)
           RETRY_COUNT=0