[ISSUE #6213] fix: when subscriptionGroupConfig is null ,we do not register consumer

[leizhiyuan]

Make sure set the target branch to develop

What is the purpose of the change

fix #6213

Brief changelog

XX

Verifying this change

XXXX

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[codecov-commenter]

Codecov Report

Merging #6214 (50df11e) into develop (88000da) will increase coverage by 0.03%.
The diff coverage is 0.00%.

@@              Coverage Diff              @@
##             develop    #6214      +/-   ##
=============================================
+ Coverage      43.18%   43.22%   +0.03%     
- Complexity      8848     8858      +10     
=============================================
  Files           1094     1094              
  Lines          77184    77185       +1     
  Branches       10070    10071       +1     
=============================================
+ Hits           33332    33362      +30     
+ Misses         39682    39654      -28     
+ Partials        4170     4169       -1     

Impacted Files	Coverage Δ
...cketmq/broker/processor/ClientManageProcessor.java	26.47% <0.00%> (-0.27%)	⬇️
...he/rocketmq/broker/controller/ReplicasManager.java	44.40% <0.00%> (-2.62%)	⬇️
...he/rocketmq/client/trace/AsyncTraceDispatcher.java	82.21% <0.00%> (-1.45%)	⬇️
...mq/store/ha/autoswitch/AutoSwitchHAConnection.java	70.27% <0.00%> (-1.36%)	⬇️
.../org/apache/rocketmq/store/ha/DefaultHAClient.java	60.82% <0.00%> (-0.52%)	⬇️
...ketmq/store/ha/autoswitch/AutoSwitchHAService.java	54.95% <0.00%> (-0.46%)	⬇️
...rocketmq/client/impl/factory/MQClientInstance.java	46.82% <0.00%> (-0.15%)	⬇️
...va/org/apache/rocketmq/store/FlushDiskWatcher.java	81.25% <0.00%> (ø)
...cketmq/store/ha/autoswitch/AutoSwitchHAClient.java	76.53% <0.00%> (+0.36%)	⬆️
...a/org/apache/rocketmq/store/StoreStatsService.java	35.63% <0.00%> (+1.10%)	⬆️
... and 8 more

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[drpmma]

LGTM