Automated cherry pick of #6227: to prevent the generation judgment from always being false

[XiShanYongYe-Chang]

Cherry pick of #6227 on release-1.13.
#6227: to prevent the generation judgment from always being false
For details on the cherry pick process, see the cherry pick requests page.

`karmada-controller-manager`: Fixed the issue that the gracefulEvictionTask of ResourceBinding can not be cleared in case of schedule fails.

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 73.07692% with 7 lines in your changes missing coverage. Please review.

Project coverage is 47.96%. Comparing base (9da8915) to head (152ea33).

Files with missing lines	Patch %	Lines
pkg/controllers/gracefuleviction/evictiontask.go	70.00%	2 Missing and 1 partial ⚠️
...acefuleviction/crb_graceful_eviction_controller.go	75.00%	2 Missing ⚠️
...racefuleviction/rb_graceful_eviction_controller.go	75.00%	2 Missing ⚠️

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Additional details and impacted files

@@               Coverage Diff                @@
##           release-1.13    #6234      +/-   ##
================================================
- Coverage         47.98%   47.96%   -0.02%     
================================================
  Files               674      674              
  Lines             55863    55863              
================================================
- Hits              26804    26797       -7     
- Misses            27311    27315       +4     
- Partials           1748     1751       +3     

Flag	Coverage Δ
unittests	47.96% <73.07%> (-0.02%)	⬇️

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[RainbowMango]

/lgtm
/approve

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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