[ISSUE #9728] fix: Broker startup failed when the consumequeue last mappfile was empty

[woaishixiaoxiao]

Which Issue(s) This PR Fixes

Fixes ##9728

Brief Description

fix: Broker startup failed when the consumequeue last mappfile was empty

How Did You Test This Change?

use bugfix branch update broker which start failed in this case and broker start normall

[codecov-commenter]

Codecov Report

❌ Patch coverage is 80.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 48.11%. Comparing base (a4da5f5) to head (32253e7).

Files with missing lines	Patch %	Lines
...n/java/org/apache/rocketmq/store/ConsumeQueue.java	80.00%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #9729      +/-   ##
=============================================
- Coverage      48.21%   48.11%   -0.11%     
+ Complexity     12166    12146      -20     
=============================================
  Files           1313     1313              
  Lines          93335    93336       +1     
  Branches       11962    11963       +1     
=============================================
- Hits           45005    44910      -95     
- Misses         42762    42845      +83     
- Partials        5568     5581      +13     

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