In CacheItem, it's better to use the private and final keywords to modify the member variable rwLock.

[Bo-Qiu]

What is the purpose of the change

(Fix #10963 ) In CacheItem, it's better to use the private and final keywords to modify the member variable rwLock.

Brief changelog

(Fix #10963 ) In CacheItem, it's better to use the private and final keywords to modify the member variable rwLock.

[codecov-commenter]

Codecov Report

Merging #10964 (62474f6) into develop (37d45ad) will decrease coverage by 0.08%.
Report is 2 commits behind head on develop.
The diff coverage is n/a.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop   #10964      +/-   ##
=============================================
- Coverage      53.25%   53.18%   -0.08%     
- Complexity      5627     5630       +3     
=============================================
  Files            927      927              
  Lines          29556    29556              
  Branches        3250     3250              
=============================================
- Hits           15741    15720      -21     
- Misses         12441    12465      +24     
+ Partials        1374     1371       -3     

see 5 files with indirect coverage changes

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