fix: DH-17454: Combine modal classes instead of replacing

[vbabich]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 46.66%. Comparing base (0058b18) to head (21e3c8f).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2173      +/-   ##
==========================================
- Coverage   46.67%   46.66%   -0.01%     
==========================================
  Files         692      692              
  Lines       38628    38625       -3     
  Branches     9631     9812     +181     
==========================================
- Hits        18028    18025       -3     
  Misses      20589    20589              
  Partials       11       11              

Flag	Coverage Δ
unit	46.66% <ø> (-0.01%)	⬇️

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[dsmmcken]

For completion you probably wanna update ModalHeader to be the same format.

[vbabich]

For completion you probably wanna update ModalHeader to be the same format.

Ok, I saw ModalHeader already combines classes, just uses a template literal instead of separate arguments. I'll update it too.