[ISSUE #9626] Prevent premature offset commit before consumer record flush

[lizhimins]

Which Issue(s) This PR Fixes

Fixes #9626

Brief Description

How Did You Test This Change?

[codecov-commenter]

Codecov Report

❌ Patch coverage is 82.35294% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 47.98%. Comparing base (f40a69f) to head (e819344).
⚠️ Report is 202 commits behind head on develop.

Files with missing lines	Patch %	Lines
...g/apache/rocketmq/broker/pop/PopConsumerCache.java	82.35%	3 Missing and 3 partials ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #9627      +/-   ##
=============================================
- Coverage      48.15%   47.98%   -0.18%     
+ Complexity     12083    12040      -43     
=============================================
  Files           1313     1313              
  Lines          92839    92836       -3     
  Branches       11870    11868       -2     
=============================================
- Hits           44710    44548     -162     
- Misses         42636    42764     +128     
- Partials        5493     5524      +31     

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[lollipopjin]

LGTM