enhance: [2.3] make the watch dm channel request better compatibility

[SimFG]

pr: #30952
issue: #30938

[mergify]

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

[czs007]

/run-cpu-e2e

[mergify]

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

[mergify]

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

[mergify]

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

[codecov]

Codecov Report

Attention: Patch coverage is 86.95652% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 82.18%. Comparing base (2f76303) to head (f9f02f1).
Report is 5 commits behind head on 2.3.

Additional details and impacted files

@@            Coverage Diff             @@
##              2.3   #30954      +/-   ##
==========================================
- Coverage   82.20%   82.18%   -0.03%     
==========================================
  Files         841      841              
  Lines      121458   121463       +5     
==========================================
- Hits        99847    99821      -26     
- Misses      18385    18407      +22     
- Partials     3226     3235       +9     

Files	Coverage Δ
internal/querycoordv2/server.go	81.86% <100.00%> (+0.15%)	⬆️
internal/querycoordv2/session/node_manager.go	100.00% <100.00%> (ø)
internal/querycoordv2/task/utils.go	91.94% <100.00%> (+0.10%)	⬆️
internal/querynodev2/cluster/worker.go	88.50% <100.00%> (-1.40%)	⬇️
internal/querycoordv2/task/executor.go	69.04% <57.14%> (-0.35%)	⬇️

... and 21 files with indirect coverage changes

[xiaofan-luan]

/lgtm
/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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