fix the cache leak in yurtappoverrider controller

[MeenuyD]

Add Cache Cleanup and Update on Deletion and Changes

When a YurtAppOverrider instance is deleted, the cache data in CacheOverriderMap should also be removed. This ensures that the cache stays synchronized with the actual instances.

Additionally, when entries of YurtAppOverrider are changed, the controller now updates the new instance into CacheOverriderMap. This guarantees that the cache reflects the latest changes in the YurtAppOverrider instances.
#1793

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[openyurt-bot]

Welcome @MeenuyD! It looks like this is your first PR to openyurtio/openyurt 🎉

[rambohe-ch]

/rerun

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (068fefe) 52.23% compared to head (70f8cce) 52.16%.
Report is 2 commits behind head on master.

Files	Patch %	Lines
...er/yurtappoverrider/yurtappoverrider_controller.go	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1795      +/-   ##
==========================================
- Coverage   52.23%   52.16%   -0.07%     
==========================================
  Files         172      172              
  Lines       20840    20840              
==========================================
- Hits        10885    10872      -13     
- Misses       8998     9010      +12     
- Partials      957      958       +1     

Flag	Coverage Δ
unittests	52.16% <75.00%> (-0.07%)	⬇️

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[YTGhost]

/lgtm

[openyurt-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: MeenuyD, rambohe-ch, YTGhost

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