enhance: support integral type for MV and skip MV if there is only one category

[PwzXxm]

issue: #29892

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[PwzXxm]

rerun ut

[codecov]

Codecov Report

Attention: Patch coverage is 48.27586% with 15 lines in your changes missing coverage. Please review.

Project coverage is 82.23%. Comparing base (a1232fa) to head (1b14480).
Report is 7 commits behind head on master.

❗ Current head 1b14480 differs from pull request most recent head 907c82f

Please upload reports for the commit 907c82f to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #33161      +/-   ##
==========================================
+ Coverage   80.88%   82.23%   +1.34%     
==========================================
  Files        1051     1000      -51     
  Lines      134863   129046    -5817     
==========================================
- Hits       109088   106121    -2967     
+ Misses      21590    18926    -2664     
+ Partials     4185     3999     -186     

Files	Coverage Δ
pkg/util/typeutil/schema.go	86.03% <100.00%> (+0.25%)	⬆️
internal/core/src/storage/DiskFileManagerImpl.cpp	64.41% <46.42%> (-0.10%)	⬇️

... and 457 files with indirect coverage changes

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[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: PwzXxm
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