fix: State trans error in concurrent Release and Watching

[XuanYang-cn]

See also: #38589
pr: #38590

[codecov]

Codecov Report

Attention: Patch coverage is 83.01887% with 9 lines in your changes missing coverage. Please review.

Project coverage is 72.16%. Comparing base (451deb3) to head (8db49a5).
Report is 1 commits behind head on 2.4.

Files with missing lines	Patch %	Lines
internal/datacoord/channel.go	55.55%	7 Missing and 1 partial ⚠️
internal/datacoord/channel_store.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              2.4   #38591      +/-   ##
==========================================
+ Coverage   72.14%   72.16%   +0.02%     
==========================================
  Files        1077     1077              
  Lines      169415   169442      +27     
==========================================
+ Hits       122217   122278      +61     
+ Misses      42719    42699      -20     
+ Partials     4479     4465      -14     

Files with missing lines	Coverage Δ
internal/datacoord/channel_manager_v2.go	87.14% <100.00%> (+0.27%)	⬆️
internal/datacoord/channel_store_v2.go	80.00% <100.00%> (ø)
internal/datacoord/channel_store.go	76.43% <0.00%> (ø)
internal/datacoord/channel.go	74.69% <55.55%> (-2.71%)	⬇️

... and 26 files with indirect coverage changes

[czs007]

/approve
/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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