Build/Test Tools: Use correct order of arguments for contains().

This corrects the order the arguments are passed to the `contains()` function in the Performance Testing workflow.

Because the arguments were passed incorrectly, the expression was not evaluating correctly.

Follow up to [56972].

Props hellofromTonya.
See #59805.

git-svn-id: https://develop.svn.wordpress.org/trunk@57085 602fd350-edb4-49c9-b593-d223f7449a82

.github/workflows/performance.yml

@@ -92,7 +92,7 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       contents: read
-    if: ${{ ( github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' ) && ! contains( '00000000', github.event.before ) }}
+    if: ${{ ( github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' ) && ! contains( github.event.before, '00000000' ) }}
 
     steps:
       - name: Configure environment variables