scheduler: optimize ElasticQuota status/metrics sync flow

[eahydra]

Ⅰ. Describe what this PR does

Optimize ElasticQuota status/metrics sync flow, make it more simple and make sure their implementations are consistent.

Ⅱ. Does this pull request fix one issue?

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[codecov]

Codecov Report

Attention: 60 lines in your changes are missing coverage. Please review.

Comparison is base (9ecac4b) 67.04% compared to head (be13681) 67.06%.
Report is 2 commits behind head on main.

Files	Patch %	Lines
pkg/scheduler/plugins/elasticquota/controller.go	70.12%	35 Missing and 11 partials ⚠️
...r/plugins/elasticquota/core/group_quota_manager.go	0.00%	7 Missing ⚠️
.../scheduler/plugins/elasticquota/core/quota_info.go	0.00%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1850      +/-   ##
==========================================
+ Coverage   67.04%   67.06%   +0.02%     
==========================================
  Files         407      407              
  Lines       45741    45702      -39     
==========================================
- Hits        30669    30652      -17     
+ Misses      12834    12828       -6     
+ Partials     2238     2222      -16     

Flag	Coverage Δ
unittests	67.06% <67.91%> (+0.02%)	⬆️

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[xulinfei1996]

/lgtm

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[shaloulcy]

/lgtm

[buptcozy]

/lgtm

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: buptcozy, hormes

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