java: mark appsec flaky test as bug to monitor the flakiness

[florentinl]

Motivation

This test was marked as flaky in #6358.
However flaky tests are skipped so it makes it impossible to monitor the recovery.

I have made a change to the test and fixed an aggregation problem in #6374 that may fix the issue, I'd like to check that the test is not flaky for a week before enabling it back.

Without any knowledge in Java and knowing that its works without problem in Python and now in NodeJS too this is a bit hard for me to debug. Help welcomed.

Changes

Workflow

1. ⚠️ Create your PR as draft ⚠️
2. Work on you PR until the CI passes
3. Mark it as ready for review
   • Test logic is modified? -> Get a review from RFC owner.
   • Framework is modified, or non obvious usage of it -> get a review from R&P team

🚀 Once your PR is reviewed and the CI green, you can merge it!

🛟 #apm-shared-testing 🛟

Reviewer checklist

• Anything but tests/ or manifests/ is modified ? I have the approval from R&P team
• A docker base image is modified?
  • the relevant build-XXX-image label is present
• A scenario is added, removed or renamed?
  • Get a review from R&P team

[github-actions]

CODEOWNERS have been resolved as:

manifests/java.yml                                                      @DataDog/asm-java @DataDog/apm-java