[ISSUE #9172] Clean pull offset and reset offset when delete subscription group

[lizhimins]

Which Issue(s) This PR Fixes

Fixes #9172

Brief Description

How Did You Test This Change?

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 85.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 48.02%. Comparing base (c24f654) to head (4a7745b).
Report is 5 commits behind head on develop.

Files with missing lines	Patch %	Lines
.../rocketmq/broker/offset/ConsumerOffsetManager.java	94.11%	0 Missing and 1 partial ⚠️
...c/main/java/org/apache/rocketmq/common/MixAll.java	50.00%	1 Missing ⚠️
...he/rocketmq/tools/admin/DefaultMQAdminExtImpl.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #9173      +/-   ##
=============================================
- Coverage      48.09%   48.02%   -0.07%     
+ Complexity     12103    12085      -18     
=============================================
  Files           1321     1321              
  Lines          93040    93033       -7     
  Branches       11924    11924              
=============================================
- Hits           44745    44683      -62     
- Misses         42782    42816      +34     
- Partials        5513     5534      +21     

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[dingshuangxi888]

LGTM