enhance: [2.4] Grant v2 proxy service supports operatePrivilegeV2

[shaoting-huang]

should support operatePrivilegeV2 service on Proxy to let SDK utilizes
cherry-pick from master: #37945
issue: #37031

[mergify]

@shaoting-huang E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 80.63%. Comparing base (e928e15) to head (1245ae5).
Report is 8 commits behind head on 2.4.

Files with missing lines	Patch %	Lines
internal/distributed/proxy/service.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              2.4   #37997      +/-   ##
==========================================
+ Coverage   80.62%   80.63%   +0.01%     
==========================================
  Files        1070     1070              
  Lines      167379   167377       -2     
==========================================
+ Hits       134942   134963      +21     
+ Misses      28008    27994      -14     
+ Partials     4429     4420       -9     

Files with missing lines	Coverage Δ
...nternal/distributed/proxy/httpserver/handler_v2.go	91.96% <100.00%> (-0.02%)	⬇️
internal/distributed/proxy/service.go	84.92% <0.00%> (-0.23%)	⬇️

... and 33 files with indirect coverage changes

[shaoting-huang]

/run-cpu-e2e

[mergify]

@shaoting-huang E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[shaoting-huang]

/run-cpu-e2e

[mergify]

@shaoting-huang E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[congqixia]

/lgtm
need fix e2e

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: congqixia, shaoting-huang

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[shaoting-huang]

/run-cpu-e2e