fix: float16 parsing accuracy issue in csv

[OxalisCu]

#36632

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: OxalisCu
To complete the pull request process, please assign wxyucs after the PR has been reviewed.
You can assign the PR to them by writing /assign @wxyucs in a comment when ready.

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

Needs approval from an approver in each of these files:

• OWNERS

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

[codecov]

Codecov Report

Attention: Patch coverage is 59.42029% with 28 lines in your changes missing coverage. Please review.

Project coverage is 80.55%. Comparing base (00a5025) to head (6a06163).
Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
internal/util/importutilv2/csv/row_parser.go	59.42%	17 Missing and 11 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #36633      +/-   ##
==========================================
- Coverage   82.33%   80.55%   -1.78%     
==========================================
  Files        1286     1273      -13     
  Lines      152078   150799    -1279     
==========================================
- Hits       125208   121480    -3728     
- Misses      21837    24282    +2445     
- Partials     5033     5037       +4     

Files with missing lines	Coverage Δ
internal/util/importutilv2/csv/row_parser.go	65.49% <59.42%> (-4.18%)	⬇️

... and 251 files with indirect coverage changes