Include Perspective CSS for non-Chrome browsers

[philippjfr]

Fixes #6653

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 40.15%. Comparing base (510d212) to head (44114fc).
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #6664       +/-   ##
===========================================
- Coverage   82.84%   40.15%   -42.70%     
===========================================
  Files         313      313               
  Lines       46119    46119               
===========================================
- Hits        38207    18517    -19690     
- Misses       7912    27602    +19690     

Flag	Coverage Δ
ui-tests	39.97% <ø> (-0.02%)	⬇️
unitexamples-tests	22.16% <ø> (-48.98%)	⬇️

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