fix: Fix collection leak in querynode

[bigsheeper]

Remove the reference counting and replace it with the ReleaseCollection RPC.

issue: https://github.com/milvus-io/milvus/issues/36918

[mergify[bot]]

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

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 89.09091% with 6 lines in your changes missing coverage. Please review.

Project coverage is 80.65%. Comparing base (8669153) to head (1bc342a). Report is 13 commits behind head on master.

Files with missing lines	Patch %	Lines
internal/querycoordv2/job/utils.go	81.25%	2 Missing and 1 partial :warning:
internal/querycoordv2/session/cluster.go	75.00%	2 Missing and 1 partial :warning:

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #36927   +/-   ##
=======================================
  Coverage   80.64%   80.65%           
=======================================
  Files        1310     1310           
  Lines      183578   183578           
=======================================
+ Hits       148054   148056    +2     
+ Misses      30393    30390    -3     
- Partials     5131     5132    +1     

Files with missing lines	Coverage Δ
internal/querycoordv2/job/job_release.go	79.04% <100.00%> (+0.20%)	:arrow_up:
internal/querycoordv2/services.go	85.26% <ø> (ø)
internal/querynodev2/segments/collection.go	93.00% <100.00%> (+0.39%)	:arrow_up:
internal/querynodev2/services.go	91.39% <100.00%> (+0.45%)	:arrow_up:
internal/querycoordv2/job/utils.go	81.63% <81.25%> (-0.08%)	:arrow_down:
internal/querycoordv2/session/cluster.go	79.83% <75.00%> (-0.26%)	:arrow_down:

... and 18 files with indirect coverage changes

[bigsheeper]

/run-cpu-e2e

[mergify[bot]]

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

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: bigsheeper To complete the pull request process, please assign yanliang567 after the PR has been reviewed. You can assign the PR to them by writing /assign @yanliang567 in a comment when ready.

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• internal/querynodev2/OWNERS

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[mergify[bot]]

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

[bigsheeper]

/run-cpu-e2e

[bigsheeper]

rerun ut

[weiliu1031]

/lgtm

[bigsheeper]

If ReleaseCollection fails, it only logs a warning, which can still lead to a collection leak in the query node.