api: show/exp: add config option

[efiop]

Fixes #9613

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.33 ⚠️

Comparison is base (0433565) 90.53% compared to head (8fd64aa) 90.21%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9617      +/-   ##
==========================================
- Coverage   90.53%   90.21%   -0.33%     
==========================================
  Files         471      471              
  Lines       36060    36060              
  Branches     5188     5188              
==========================================
- Hits        32646    32530     -116     
- Misses       2819     2907      +88     
- Partials      595      623      +28     

Impacted Files	Coverage Δ
dvc/api/experiments.py	91.66% <100.00%> (ø)
dvc/api/show.py	97.43% <100.00%> (ø)

... and 26 files with indirect coverage changes

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