Move from testing to final for telemetry PR detection workflow

[chatasweetie]

Summary of the Pull Request

Transitions the telemetry PR detection workflow from testing phase to ready status. All components are now fully functional and automatically triggered on every new PR.

• Skips checks on draft PRs to avoid noise
• Prevents multiple concurrent runs per PR
• Safely requests @chatasweetie as reviewer on telemetry changes
• update commit messages

PR Checklist

• Closes: #xxx

• Communication: I've discussed this with core contributors already. If the work hasn't been agreed, this work might be rejected
• Tests: Added/updated and all pass
• Localization: All end-user-facing strings can be localized
• Dev docs: Added/updated
• New binaries: Added on the required places
  • JSON for signing for new binaries
  • WXS for installer for new binaries and localization folder
  • YML for CI pipeline for new test projects
  • YML for signed pipeline
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Moves the telemetry PR detection workflow messaging from “test” language to final guidance and adds automatic reviewer requesting for telemetry-related PRs.

Changes:

• Updates the bot comment bodies to remove “test” messaging and provide actionable checklists.
• Adds helper functions to fetch PR details and request a specific reviewer when needed.
• Centralizes reviewer login in a constant.