Project Board Migration: refactoring of "Pull Request Trigger" workflow

[t-will-gillis]

Dependency

• Prep for Project Board Migration: Configure "Automatic workflows" #6995

Overview

Many of our workflows need to be refactored due to the forced migration from the Project Board (classic) to the Project Board- Beta (PBB). This issue addresses changes that we need to make in order to ensure that our "Pull Request Trigger" workflow works as it did previously.

Action Items

• In pull-request-trigger.yml remove the entirety of the job "Move-New-PRS-To-Project-Board", that is lines 14 through 26. (The "Default workflows" will do this now.)
• In same file, delete the remaining jobs. Currently, the workflow removes PRs from the board that either are or are not merged. The PBB "Default workflows" can auto-archive PRs that match this description. Post-migration, we will decide whether these PRs need to be auto-removed as well.
• Leave "Hello World" as a placeholder.

Post migration issues needed:

• Confirm: Need issue for action that will remove merged && unmerged + closed PRs from Project Board- in the new PBB these PRs are auto-archived but still exist in the project.

Resources/Instructions

• Sunset notice for Projects (classic)
• This issue initiated by Prep for Project Board Migration: GitHub Actions / Workflows Part 1 of 2  #6993

[ExperimentsInHonesty]

• Need to move after pr actions to the epic

- [ ] Post migration issues needed after #6997 is closed
   - [ ] Confirm: Need issue for action that will remove merged && unmerged + closed PRs from Project Board- in the new PBB these PRs are auto-archived but still exist in the project.