[enhancement]: hictk balance: improve log messages when balancing with --mode=trans

[robomics]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 68.05556% with 23 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.30%. Comparing base (4730173) to head (88db510).

Files with missing lines	Patch %	Lines
...alancing/include/hictk/balancing/impl/ice_impl.hpp	76.31%	6 Missing and 3 partials ⚠️
...ancing/include/hictk/balancing/impl/scale_impl.hpp	58.82%	5 Missing and 2 partials ⚠️
...balancing/include/hictk/balancing/impl/vc_impl.hpp	58.82%	5 Missing and 2 partials ⚠️

❌ Your patch check has failed because the patch coverage (68.05%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #476      +/-   ##
==========================================
- Coverage   81.37%   81.30%   -0.07%     
==========================================
  Files         184      184              
  Lines       18802    18832      +30     
  Branches     2622     2622              
==========================================
+ Hits        15300    15312      +12     
- Misses       2610     2624      +14     
- Partials      892      896       +4     

Flag	Coverage Δ
[tests	fuzzer](https://app.codecov.io/gh/paulsengroup/hictk/pull/476/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=paulsengroup)	30.28% <ø> (+<0.01%)
[tests	integration](https://app.codecov.io/gh/paulsengroup/hictk/pull/476/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=paulsengroup)	71.09% <68.05%> (-0.05%)
[tests	unittests](https://app.codecov.io/gh/paulsengroup/hictk/pull/476/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=paulsengroup)	79.55% <68.05%> (-0.12%)

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