enhance: Remove unnecessary clone in SetState

[bigsheeper]

issue: #37637

[mergify]

@bigsheeper cpp-unit-test check failed, comment rerun cpp-unit-test can trigger the job again.

[xiaofan-luan]

/lgtm
/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.66%. Comparing base (5ae347a) to head (38fd5cd).
Report is 9 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #37697       +/-   ##
===========================================
+ Coverage   68.64%   80.66%   +12.01%     
===========================================
  Files         290     1357     +1067     
  Lines       25457   190667   +165210     
===========================================
+ Hits        17476   153805   +136329     
- Misses       7981    31430    +23449     
- Partials        0     5432     +5432     

Components	Coverage Δ
Client	61.25% <ø> (∅)
Core	68.91% <100.00%> (+0.26%)	⬆️
Go	83.17% <94.73%> (∅)

Files with missing lines	Coverage Δ
internal/datacoord/meta.go	89.51% <100.00%> (ø)
internal/datacoord/segment_info.go	84.72% <ø> (ø)

... and 1069 files with indirect coverage changes

[czs007]

/lgtm