proxy list with rv=0 no longer access member cluster etcd

[ikaven1024]

What type of PR is this?
/kind bug

What this PR does / why we need it:
When client request list with rv=0, proxy fetch objects from cache. It works as expected.
While when pagination occurs, a continue will be responsed. This continue will filled with cluster's versions.

karmada/pkg/search/proxy/store/multi_cluster_cache.go

Line 295 in 02dad48

if err := c.fillMissingClusterResourceVersion(ctx, responseResourceVersion, clusters, gvr); err != nil {

And the next paging request will access etcd with version in continue. We should make it accessing cache also to improve performance.

Which issue(s) this PR fixes:

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

`karmada-search`: proxy list with rv=0 no longer access member cluster etcd

[karmada-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[ikaven1024]

Run karmada-search with --v=4, and request pods with limit=1 and rv=0, get logs:

I0502 22:55:20.201074   20847 multi_cluster_cache.go:233] List member cluster kwok-cluster1 with &internalversion.ListOptions{TypeMeta:v1.TypeMeta{Kind:"", APIVersion:""}, LabelSelector:labels.internalSelector(nil), FieldSelector:fields.andTerm{}, Watch:false, AllowWatchBookmarks:false, ResourceVersion:"0", ResourceVersionMatch:"", TimeoutSeconds:(*int64)(nil), Limit:1, Continue:"", SendInitialEvents:(*bool)(nil)}
I0502 22:55:20.219607   20847 multi_cluster_cache.go:233] List member cluster kwok-cluster2 with &internalversion.ListOptions{TypeMeta:v1.TypeMeta{Kind:"", APIVersion:""}, LabelSelector:labels.internalSelector(nil), FieldSelector:fields.andTerm{}, Watch:false, AllowWatchBookmarks:false, ResourceVersion:"0", ResourceVersionMatch:"", TimeoutSeconds:(*int64)(nil), Limit:1, Continue:"", SendInitialEvents:(*bool)(nil)}

From the logs, we can see that both two member clusters are accessed with ResourceVersion:"0".

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 16.66667% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 53.11%. Comparing base (5bc8c54) to head (7015546).
Report is 2 commits behind head on master.

Files	Patch %	Lines
pkg/search/proxy/store/multi_cluster_cache.go	16.66%	4 Missing and 1 partial ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4896      +/-   ##
==========================================
- Coverage   53.12%   53.11%   -0.02%     
==========================================
  Files         251      251              
  Lines       20417    20422       +5     
==========================================
  Hits        10847    10847              
- Misses       8856     8860       +4     
- Partials      714      715       +1     

Flag	Coverage Δ
unittests	53.11% <16.66%> (-0.02%)	⬇️

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[RainbowMango]

Thanks @ikaven1024 , please assign this to @XiShanYongYe-Chang or me once it's ready for review.