[ISSUE #11176] Fix incorrect filter appender name in broker logging configuration

[majialoong]

Which Issue(s) This PR Fixes

• Fixes [Bug] Incorrect filter appender name in broker logging configuration #11176

Brief Description

Fix the incorrect filter appender name.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.40%. Comparing base (42a6d57) to head (77d4a6e).

Additional details and impacted files

@@              Coverage Diff              @@
##             develop   #11177      +/-   ##
=============================================
- Coverage      49.46%   49.40%   -0.06%     
+ Complexity     14276    14264      -12     
=============================================
  Files           1390     1390              
  Lines         103148   103148              
  Branches       13483    13483              
=============================================
- Hits           51017    50961      -56     
- Misses         45968    46015      +47     
- Partials        6163     6172       +9     

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[RockteMQ-AI]

Summary

This PR fixes a copy-paste naming error in the broker logback configuration: the outer AsyncAppender wrapper for the filter sifting appender was incorrectly named RocketmqRebalanceLockSiftingAppender instead of RocketmqFilterSiftingAppender. The inner appender-ref already correctly references RocketmqFilterSiftingAppender_inner, so this rename makes the outer name consistent.

LGTM — trivial, correct, and all CI checks pass.

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