[ISSUE #7547] Let consumer be aware of message queue assignment change

[lizhanhui]

fix #7547

[codecov-commenter]

Codecov Report

Merging #7548 (f74c887) into develop (27759f3) will decrease coverage by 0.04%.
The diff coverage is 40.00%.

@@              Coverage Diff              @@
##             develop    #7548      +/-   ##
=============================================
- Coverage      43.13%   43.09%   -0.04%     
- Complexity      9709     9714       +5     
=============================================
  Files           1159     1159              
  Lines          84049    84058       +9     
  Branches       10923    10924       +1     
=============================================
- Hits           36257    36228      -29     
- Misses         43279    43319      +40     
+ Partials        4513     4511       -2     

Files	Coverage Δ
...ocketmq/client/consumer/DefaultMQPushConsumer.java	56.76% <33.33%> (-0.32%)	⬇️
...lient/impl/consumer/DefaultMQPushConsumerImpl.java	34.98% <50.00%> (-0.01%)	⬇️
...cketmq/client/impl/consumer/RebalancePushImpl.java	48.80% <33.33%> (-0.39%)	⬇️

... and 22 files with indirect coverage changes

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