[ISSUE #10806] Log proxy remoting cleanup failures

[Aias00]

Summary

• log unexpected failures from Proxy remoting expired request cleanup with compact queue context
• stop the current cleanup pass after such failures to avoid silent loop churn
• add regression coverage for queue access failures

Tests

• JAVA_HOME=$(/usr/libexec/java_home -v 1.8) mvn -pl proxy -DskipITs -DskipCheckStyle -Dtest=RemotingProtocolServerTest test
• git diff --check

Closes #10806

[Copilot]

Pull request overview

This PR fixes Proxy remoting expired-request queue cleanup to avoid silently swallowing unexpected failures by logging a warning with compact queue context and breaking out of the current cleanup pass. It also adds a regression test to ensure the cleanup does not spin when queue access fails.

Changes:

• Log unexpected exceptions during cleanExpiredRequestInQueue with queue size context and stop the current cleanup pass.
• Add safeQueueSize(...) helper to safely obtain queue size for logging.
• Add a regression unit test covering queue access failure behavior.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
proxy/src/main/java/org/apache/rocketmq/proxy/remoting/RemotingProtocolServer.java	Logs cleanup failures with queue context and breaks the cleanup loop to prevent silent churn.
proxy/src/test/java/org/apache/rocketmq/proxy/remoting/RemotingProtocolServerTest.java	Adds regression coverage ensuring cleanup stops promptly when getQueue() throws.

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 60.00000% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 48.23%. Comparing base (eddb235) to head (1536de3).

Files with missing lines	Patch %	Lines
...ocketmq/proxy/remoting/RemotingProtocolServer.java	60.00%	4 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop   #10807      +/-   ##
=============================================
- Coverage      48.33%   48.23%   -0.10%     
+ Complexity     13524    13488      -36     
=============================================
  Files           1380     1380              
  Lines         101104   101113       +9     
  Branches       13107    13108       +1     
=============================================
- Hits           48864    48772      -92     
- Misses         46281    46355      +74     
- Partials        5959     5986      +27     

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