[HOLD for payment 2024-11-26] Add Test Build Started Comment

[grgia]

Problem:
Test builds often lack visibility, making it hard for reviewers to know when a build is in progress.

Solution:
Automatically post a comment on the PR to alert reviewers when the build begins, ensuring better communication and visibility.

[melvin-bot]

Reviewing label has been removed, please complete the "BugZero Checklist".

[melvin-bot]

The solution for this issue has been 🚀 deployed to production 🚀 in version 9.0.63-3 and is now subject to a 7-day regression period 📆. Here is the list of pull requests that resolve this issue:

• [No QA][ADHOC builds] Add a comment when the build begins #52587

If no regressions arise, payment will be issued on 2024-11-26. 🎊

[melvin-bot]

Skipping the payment summary for this issue since all the assignees are employees or vendors. If this is incorrect, please manually add the payment summary SO.

[melvin-bot]

@grgia Whoops! This issue is 2 days overdue. Let's get this updated quick!

[grgia]

Done!