[ISSUE #10071] Fix PopLiteLongPollingService#cleanUnusedResource

[f1amingo]

Which Issue(s) This PR Fixes

Fixes #10071

Brief Description

Problem: The cleanUnusedResource method was cleaning up client long polling requests without returning results to clients, causing client errors.

Solution:

1. Simplified the cleanUnusedResource method to only remove entries with empty request queues
2. Changed cleanup interval from 5 minutes to 3 minutes

How Did You Test This Change?

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 48.82%. Comparing base (7fe0349) to head (6a09311).
⚠️ Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
.../broker/longpolling/PopLiteLongPollingService.java	0.00%	3 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop   #10072      +/-   ##
=============================================
- Coverage      48.90%   48.82%   -0.08%     
+ Complexity     13362    13334      -28     
=============================================
  Files           1373     1373              
  Lines          99878    99875       -3     
  Branches       12910    12909       -1     
=============================================
- Hits           48841    48764      -77     
- Misses         45119    45184      +65     
- Partials        5918     5927       +9     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.