Check the md5 of the metadata cache file

[finefuture]

What is the purpose of the change?

The local cache file may be damaged for various reasons, resulting in a no provider exception, check the consistency of md5 can avoid this problem.

Checklist

• Make sure there is a GitHub_issue field for the change.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit-test to verify your logic correction. If the new feature or significant change is committed, please remember to add sample in dubbo samples project.
• Make sure gitHub actions can pass. Why the workflow is failing and how to fix it?

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 82.35294% with 3 lines in your changes missing coverage. Please review.

Project coverage is 60.77%. Comparing base (90f49e5) to head (e60748c).

Files with missing lines	Patch %	Lines
...gistry/client/metadata/store/MetaCacheManager.java	50.00%	1 Missing and 1 partial ⚠️
...rg/apache/dubbo/metadata/AbstractCacheManager.java	83.33%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                3.3   #15006      +/-   ##
============================================
+ Coverage     60.74%   60.77%   +0.03%     
- Complexity    10887    10889       +2     
============================================
  Files          1885     1885              
  Lines         86063    86071       +8     
  Branches      12894    12894              
============================================
+ Hits          52277    52313      +36     
+ Misses        28336    28310      -26     
+ Partials       5450     5448       -2     

Flag	Coverage Δ
integration-tests	33.09% <64.70%> (-0.06%)	⬇️
samples-tests	29.21% <58.82%> (+0.01%)	⬆️
unit-tests	58.90% <82.35%> (+0.05%)	⬆️

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