Handle TableRow json specifically

[RustedBones]

Reverts changes in #5416, introduce other strategy for JSON column with TableRow load API

[codecov]

Codecov Report

Attention: Patch coverage is 40.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 61.37%. Comparing base (37f74a2) to head (45ef031).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
...la/com/spotify/scio/bigquery/client/TableOps.scala	0.00%	1 Missing ⚠️
.../spotify/scio/bigquery/syntax/TableRowSyntax.scala	66.66%	1 Missing ⚠️
...cala/com/spotify/scio/bigquery/types/package.scala	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5589      +/-   ##
==========================================
+ Coverage   61.26%   61.37%   +0.10%     
==========================================
  Files         314      314              
  Lines       11262    11249      -13     
  Branches      796      783      -13     
==========================================
+ Hits         6900     6904       +4     
+ Misses       4362     4345      -17     

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