revert: "chore: Update bold font weight to 600 in one theme"

[mxschll]

Reverts #4897

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.66%. Comparing base (7f29935) to head (0875f9a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4899   +/-   ##
=======================================
  Coverage   97.66%   97.66%           
=======================================
  Files         958      958           
  Lines       31308    31308           
  Branches    11563    11564    +1     
=======================================
  Hits        30576    30576           
+ Misses        725      686   -39     
- Partials        7       46   +39     

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