enhance: index meta use independent rather than global meta lock

[jaime0815]

issue: #30837
pr: #30869

[mergify]

@jaime0815 ut workflow job failed, comment rerun ut can trigger the job again.

[codecov]

Codecov Report

Attention: Patch coverage is 95.38462% with 12 lines in your changes are missing coverage. Please review.

Project coverage is 82.21%. Comparing base (7014d35) to head (f4da411).
Report is 1 commits behind head on 2.3.

Additional details and impacted files

@@            Coverage Diff             @@
##              2.3   #30986      +/-   ##
==========================================
+ Coverage   82.19%   82.21%   +0.01%     
==========================================
  Files         843      843              
  Lines      121847   121908      +61     
==========================================
+ Hits       100153   100225      +72     
+ Misses      18466    18451      -15     
- Partials     3228     3232       +4     

Files	Coverage Δ
internal/datacoord/compaction_trigger.go	84.77% <100.00%> (+0.02%)	⬆️
internal/datacoord/garbage_collector.go	90.90% <100.00%> (ø)
internal/datacoord/segment_info.go	73.63% <100.00%> (+0.78%)	⬆️
internal/datacoord/server.go	70.30% <ø> (ø)
internal/datacoord/util.go	99.09% <100.00%> (ø)
internal/datacoord/index_service.go	95.14% <98.38%> (+0.27%)	⬆️
internal/datacoord/index_builder.go	89.96% <83.33%> (ø)
internal/datacoord/meta.go	88.64% <76.92%> (-0.47%)	⬇️
internal/datacoord/index_meta.go	98.54% <96.10%> (-0.73%)	⬇️

... and 18 files with indirect coverage changes

[mergify]

@jaime0815 E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[jaime0815]

/run-cpu-e2e

[mergify]

@jaime0815 E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[xiaofan-luan]

/lgtm
/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jaime0815, xiaofan-luan

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