test: reproduce hanging RequestManager requests and missing cleanup

[ayushi-forge]

Adds regression tests that expose hanging requests in RequestManager
when callbacks never resolve and pendingRequests is not cleaned up.

This PR intentionally contains tests only.

[ayushi-forge]

Closing this PR in favor of a clean follow-up PR that contains
only the RequestManager regression tests.

New PR: #5752

[github-actions]

❌ Some Jest tests failed. Please check the logs and fix the issues before merging.

Failed Tests:

RequestManager.test.js

[ayushi-forge]

Note: The failing Jest tests are expected here.
They intentionally reproduce the current RequestManager behavior
(hanging requests and missing cleanup).

A follow-up PR will address the fix once this approach is approved.

[github-actions]

❌ Some Jest tests failed. Please check the logs and fix the issues before merging.

Failed Tests:

RequestManager.test.js

[ayushi-forge]

Reiterating for clarity: the failing Jest tests in this PR are intentional.
They document the current RequestManager bug (hanging requests + missing cleanup).

Once this approach is approved, I’ll open a follow-up PR that implements
the timeout + rejection + cleanup fix.

[omsuneri]

@ayushi-forge please tag the issue i m not getting whats the issue ????