CI: Automatically add 'Needs Review' label to newly opened PRs

[aladdin-afk]

Purpose / Description

Automated adding the Needs Review label to new opened, nondraft prs. This removes the need for maintainers to be pinged or check manually.

Fixes

• Fixes CI: Add 'Needs Review' label to opened PRs #19958

Approach

Added a new job that uses github script to automatically add the Needs Review label when a new pr is opened or is not a draft.

How Has This Been Tested?

Verified the workflow logic in YAML file.
Confirmed the job only triggers for newly opened, undrafted prs

Learning (optional, can help others)

referenced GitHub Actions documentation for workflow conditions.
https://docs.github.com/en/actions/reference/workflows-and-actions/workflow-syntax
https://docs.github.com/en/actions/reference/workflows-and-actions/events-that-trigger-workflows

Checklist

Please, go through these checks before submitting the PR.

• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner

[david-allison]

⚠️⚠️ This is a security-critical action (pull_request_target) and bugs here can cause catastrophic damage to the repo.

Please rebase this so there is only 1 commit, and that the commit only contains necessary changes.

[david-allison]

Learning (optional, can help others)

referenced GitHub Actions documentation for workflow conditions.

Please list the docs

[BrayanDSO]

How Has This Been Tested?
Verified the workflow logic in YAML file.
Confirmed the job only triggers for newly opened, undrafted prs

Please try the workflow on your fork, then report back the results