build(ci): Add 'Needs Review' label to opened PRs

Unless they are drafts

This automates a task which maintainers could be pinged for

Fixes 19958

Co-authored-by: David Allison <62114487+david-allison@users.noreply.github.com>

Author: 2 people

.github/workflows/label.yml

@@ -206,3 +206,21 @@ jobs:
               repo: context.repo.repo,
               labels: ['New contributor']
             })
+  
+  # Add 'Needs Review' label to newly opened, non-draft PRs
+  add_needs_review_label:
+    if: github.event.action == 'opened' && !github.event.pull_request.draft
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@v8
+        with:
+          script: |
+            await github.rest.issues.addLabels({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              labels: ['Needs Review']
+            })

CONTRIBUTING.md

@@ -166,7 +166,7 @@ If you feel your PR is no longer reviewable because it requires significant work
 #### Label guide
 
 * **No label**
-  * Please ping a maintainer to add a '**Needs Review**' label 
+  * PRs should not be unlabeled, please ping a maintainer if this occurs. 
 * **[Needs Author Reply](https://github.com/ankidroid/Anki-Android/labels/Needs%20Author%20Reply)**
   * The PR will unlikely be looked at until requested changes are made.
 * **[Has Conflicts](https://github.com/ankidroid/Anki-Android/labels/Has%20Conflicts)**