[ci] Don't run some checks for non-members/collaborators (#32918)

There's really no need to even run the workflow for non-members or
collaborators for the labeling and discord notification workflows. We
can exit early.

Author: poteto

.github/workflows/compiler_discord_notify.yml

@@ -10,7 +10,19 @@ on:
 permissions: {}
 
 jobs:
+  check_access:
+    runs-on: ubuntu-latest
+    outputs:
+      is_member_or_collaborator: ${{ steps.check_access.outputs.result }}
+    steps:
+      - name: Check access
+        id: check_access
+        if: ${{ github.event.pull_request.author_association == 'MEMBER' || github.event.pull_request.author_association == 'COLLABORATOR' }}
+        run: echo "is_member_or_collaborator=true" >> "$GITHUB_OUTPUT"
+
   check_maintainer:
+    if: ${{ needs.check_access.outputs.is_member_or_collaborator == 'true' }}
+    needs: [check_access]
     uses: facebook/react/.github/workflows/shared_check_maintainer.yml@main
     permissions:
       # Used by check_maintainer

.github/workflows/runtime_discord_notify.yml

@@ -10,7 +10,19 @@ on:
 permissions: {}
 
 jobs:
+  check_access:
+    runs-on: ubuntu-latest
+    outputs:
+      is_member_or_collaborator: ${{ steps.check_access.outputs.result }}
+    steps:
+      - name: Check access
+        id: check_access
+        if: ${{ github.event.pull_request.author_association == 'MEMBER' || github.event.pull_request.author_association == 'COLLABORATOR' }}
+        run: echo "is_member_or_collaborator=true" >> "$GITHUB_OUTPUT"
+
   check_maintainer:
+    if: ${{ needs.check_access.outputs.is_member_or_collaborator == 'true' }}
+    needs: [check_access]
     uses: facebook/react/.github/workflows/shared_check_maintainer.yml@main
     permissions:
       # Used by check_maintainer

.github/workflows/shared_label_core_team_prs.yml

@@ -11,7 +11,19 @@ env:
   SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
 
 jobs:
+  check_access:
+    runs-on: ubuntu-latest
+    outputs:
+      is_member_or_collaborator: ${{ steps.check_access.outputs.result }}
+    steps:
+      - name: Check access
+        id: check_access
+        if: ${{ github.event.pull_request.author_association == 'MEMBER' || github.event.pull_request.author_association == 'COLLABORATOR' }}
+        run: echo "is_member_or_collaborator=true" >> "$GITHUB_OUTPUT"
+
   check_maintainer:
+    if: ${{ needs.check_access.outputs.is_member_or_collaborator == 'true' }}
+    needs: [check_access]
     uses: facebook/react/.github/workflows/shared_check_maintainer.yml@main
     permissions:
       # Used by check_maintainer