fix:[cherry-pick]Panic if ProcessActiveStandBy returns error

[wayblink]

pr:#33369
issue:#33368

[mergify]

@wayblink Please associate the related pr of master to the body of your Pull Request. (eg. “pr: #”)

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 82.13%. Comparing base (e8c9bdf) to head (bdabce1).
Report is 8 commits behind head on 2.4.

Additional details and impacted files

@@            Coverage Diff             @@
##              2.4   #33372      +/-   ##
==========================================
- Coverage   82.13%   82.13%   -0.01%     
==========================================
  Files        1006     1006              
  Lines      128162   128166       +4     
==========================================
+ Hits       105270   105271       +1     
+ Misses      18927    18920       -7     
- Partials     3965     3975      +10     

Files	Coverage Δ
internal/querycoordv2/server.go	83.40% <0.00%> (ø)
internal/rootcoord/root_coord.go	91.96% <0.00%> (ø)
internal/datacoord/server.go	70.83% <0.00%> (-0.46%)	⬇️

... and 30 files with indirect coverage changes

[xiaofan-luan]

/lgtm
/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• internal/datacoord/OWNERS [xiaofan-luan]
• internal/querycoordv2/OWNERS [xiaofan-luan]
• internal/rootcoord/OWNERS [xiaofan-luan]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment