Add explicit expression syntax to job-level if condition

Co-authored-by: asperpharma <252395498+asperpharma@users.noreply.github.com>

Author: Copilot

.github/workflows/sync-file-changes-to-lovable.yml

@@ -16,7 +16,7 @@ on:
 jobs:
   sync_files_to_lovable:
     runs-on: ubuntu-latest
-    if: secrets.LOVABLE_WEBHOOK_URL != ''
+    if: ${{ secrets.LOVABLE_WEBHOOK_URL != '' }}
     steps:
       - name: Filter commit file changes and send to Lovable
         env: