Automated cherry pick of #4144: fix: cannot access ResourceRegistry with its singularName

[Yan-Daojiang]

Cherry pick of #4144 on release-1.7.
#4144: fix: cannot access ResourceRegistry with its singularName
For details on the cherry pick process, see the cherry pick requests page.

`karmada-search`: Fixed can not access ResourceRegistry issue due to misconfigured singular name.

[codecov-commenter]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (c6e7cf9) 53.86% compared to head (57e972a) 53.86%.

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Additional details and impacted files

@@             Coverage Diff              @@
##           release-1.7    #4153   +/-   ##
============================================
  Coverage        53.86%   53.86%           
============================================
  Files              231      231           
  Lines            22949    22949           
============================================
  Hits             12361    12361           
  Misses            9920     9920           
  Partials           668      668           

Flag	Coverage Δ
unittests	53.86% <0.00%> (ø)

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Files	Coverage Δ
pkg/registry/search/storage/resourceregistry.go	0.00% <0.00%> (ø)

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[RainbowMango]

/lgtm
/approve

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: RainbowMango

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