chore: backport workflow and SonarCloud cleanup to release/live

[Sunilsbcloud]

Summary

Backport of reviewed cleanup from trunk PR #2698 to release/live, plus 2 additional workflow deletions approved separately.

Original trunk PR: #2698

PR Commit SHA(s) Used

d068cb31b (Sonar cleanup)
ce342dcc1 (workflow cleanup)
+ additional commit: remove create-tag.yml and sync.yml (intentional, approved)

Files Changed (14 files)

• M .copilotignore
• D .github/workflows/create-tag.yml
• D .github/workflows/p2-aus.yml
• D .github/workflows/p2-euk.yml
• D .github/workflows/p2-prerelease.yml
• D .github/workflows/p2-sandbox.yml
• D .github/workflows/p2-stage.yml
• D .github/workflows/p2-usa.yml
• D .github/workflows/pull-req.yml
• D .github/workflows/sync.yml
• M .gitignore
• M package-lock.json
• M package.json
• D sonar-project.properties

Additional Changes Beyond Trunk PR #2698

• .github/workflows/create-tag.yml — deleted (intentional, approved)
• .github/workflows/sync.yml — deleted (intentional, approved)

Verification Summary

• Fresh branch from origin/release/live
• Only reviewed PR commits cherry-picked + 2 approved workflow deletions
• No application source code changes
• All changes are workflow/Sonar/dev-tooling only

Awaiting manual review. Do not auto-merge.

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