[ISSUE #8409] Fix tiered storage roll file logic if committing the last part of a file failed

[bxfjb]

Which Issue(s) This PR Fixes

Fixes #8409

Brief Description

How Did You Test This Change?

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 45.06%. Comparing base (d9d53d5) to head (2331d56).

Files	Patch %	Lines
...ache/rocketmq/tieredstore/file/FlatAppendFile.java	66.66%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #8410      +/-   ##
=============================================
- Coverage      45.12%   45.06%   -0.06%     
+ Complexity     10931    10925       -6     
=============================================
  Files           1274     1274              
  Lines          88970    88974       +4     
  Branches       11434    11435       +1     
=============================================
- Hits           40144    40100      -44     
- Misses         43826    43865      +39     
- Partials        5000     5009       +9     

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