Add nightly scheduled tests to detect Loom JDK breaking changes

Co-authored-by: franz1981 <13125299+franz1981@users.noreply.github.com>

Author: Copilot

.github/workflows/loom-tests.yml

@@ -8,6 +8,9 @@ on:
     branches: [ "master" ]
   pull_request:
     branches: [ "master" ]
+  schedule:
+    # Run nightly at 2:00 AM UTC to detect breaking changes in Loom JDK
+    - cron: '0 2 * * *'
 
 jobs:
   test-with-loom: