fix: Prevent workflow from running on PR checkbox toggles

Author: sheikhlimon

.github/workflows/autolabel-pr-issue.yml

@@ -12,8 +12,16 @@ permissions:
 
 jobs:
   sync-pr-metadata:
+    if: |
+      github.event.action != 'edited' ||
+      (
+        github.event.changes.body &&
+        (
+          contains(github.event.changes.body.from || '', '#') !=
+          contains(github.event.pull_request.body || '', '#')
+        )
+      )
     runs-on: ubuntu-latest
-
     steps:
       # Step 1: Checkout repository
       - name: Checkout