Ensure the cherry pick operation only executes against `trunk` (#47312)

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-release-highlight-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update README.md

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update test-assistant-api-rest-change-tracker.yml

* Update cherry pick workflow to only execute against trunk

* Update workflow to add safety checks before accessing nested properties

* Update workflow to add safety checks before accessing nested properties

* log outputs for debugging

* log outputs for debugging

* log outputs for debugging

* log outputs for debugging

* log outputs for debugging

* log outputs for debugging

* log outputs for debugging

* sync files pre PR

.github/workflows/cherry-pick.yml

@@ -39,18 +39,34 @@ jobs:
         outputs:
             run: ${{ steps.check.outputs.run }}
         steps:
+            - name: Fetch Pull Request Details
+              if: github.event.issue.pull_request
+              id: fetch_pr_details
+              uses: actions/github-script@v6
+              with:
+                script: |
+                  const issue = context.payload.issue;
+                  const pullRequestUrl = issue.pull_request.url;
+                  const prDetails = await github.request(pullRequestUrl);
+                  core.setOutput('base_ref', prDetails.data.base.ref);
+              env:
+                GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
             - name: check
               id: check
               uses: actions/github-script@v6
               with:
                   script: |
+                      const baseRef = process.env.BASE_REF;
+                      console.log("baseRef:", baseRef);
+
                       let run = false;
 
                       const isManualTrigger = context.payload.inputs && context.payload.inputs.release_branch && context.payload.inputs.release_branch != null;
 
-                      const isMergedMilestonedIssue = context.payload.issue && context.payload.issue.pull_request != null && context.payload.issue.pull_request.merged_at != null && context.payload.issue.milestone != null;
+                      const isMergedMilestonedIssue = context.payload.issue && context.payload.issue.pull_request != null && context.payload.issue.pull_request.merged_at != null && context.payload.issue.milestone != null && baseRef == 'trunk';
 
-                      const isMergedMilestonedPR = context.payload.pull_request && context.payload.pull_request != null && context.payload.pull_request.merged == true && context.payload.pull_request.milestone != null;
+                      const isMergedMilestonedPR = context.payload.pull_request && context.payload.pull_request != null && context.payload.pull_request.merged == true && context.payload.pull_request.milestone != null && baseRef == 'trunk';
 
                       const isBot = context.payload.pull_request && ( context.payload.pull_request.user.login == 'github-actions[bot]' || context.payload.pull_request.user.type == 'Bot' );
 
@@ -59,6 +75,9 @@ jobs:
                       } else {
                         core.setOutput( 'run', 'false' );
                       }
+              env:
+                BASE_REF: ${{ steps.fetch_pr_details.outputs.base_ref }}
+
     prep:
         name: Prep inputs
         runs-on: ubuntu-20.04
@@ -363,4 +382,4 @@ jobs:
                       Release lead please review:
 
                       ${{ steps.cherry-pick-pr.outputs.cherry-pick-pr }}
-                      ${{ steps.deletion-pr.outputs.deletion-pr }}
+                      ${{ steps.deletion-pr.outputs.deletion-pr }}