ci: Fix rollback logic for uncommitted changes in CI workflow

Author: mbfakourii

.github/workflows/ci.yml

@@ -54,12 +54,12 @@ jobs:
       - name: Rollback uncommitted changes for Fix Bug mocks
         run: |
           git status --porcelain
-          if [ -n "$(git status --porcelain)" ]; then
+          if ($?) {
             echo "There are uncommitted changes. Rolling back the following files:"
             git checkout -- test/src/network/parse_query_test.mocks.dart test/src/objects/parse_object/parse_object_test.mocks.dart
-          else
+          } else {
             echo "No uncommitted changes found."
-          fi
+          }
       - name: Publish dry run
         run: cd packages/dart && dart pub publish --dry-run
       - name: Run tests