enhance: [2.4] Refine clustering compaction log

[xiaocai2333]

master pr: #38100

[sre-ci-robot]

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[mergify]

@xiaocai2333 E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[xiaocai2333]

/run-cpu-e2e

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.46%. Comparing base (a71d49d) to head (cf3531a).
Report is 1 commits behind head on 2.4.

Additional details and impacted files

@@             Coverage Diff             @@
##              2.4   #38102       +/-   ##
===========================================
- Coverage   80.63%   70.46%   -10.18%     
===========================================
  Files        1070     1070               
  Lines      167554   167524       -30     
===========================================
- Hits       135114   118038    -17076     
- Misses      28017    45049    +17032     
- Partials     4423     4437       +14     

Files with missing lines	Coverage Δ
internal/datacoord/compaction_task_clustering.go	76.73% <100.00%> (+0.15%)	⬆️

... and 269 files with indirect coverage changes