Test all JVMs on GH MQ (#10623)

Test all JVMs on GH MQ

Co-authored-by: sarah.chen <sarah.chen@datadoghq.com>

Author: sarahchen6

.github/workflows/run-system-tests.yaml

@@ -1,6 +1,7 @@
 name: Run system tests
 
 on:
+  merge_group:
   pull_request:
   workflow_dispatch:
   schedule:

.gitlab-ci.yml

@@ -597,6 +597,8 @@ muzzle-dep-report:
       when: on_success
     - if: '$CI_COMMIT_BRANCH =~ /^mq-working-branch-/'
       when: on_success
+    - if: '$CI_COMMIT_BRANCH =~ /^gh-readonly-queue/'
+      when: on_success
   script:
     - *gitlab_base_ref_params
     - >