fix: updated red color in cloud-editor dark theme

[marinsokol5]

Description of changes:

The new color meets the 4.5:1 contrast ratio, while the previous color didn't.

Versus previous:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c216ef4) 87.59% compared to head (0812fa1) 87.59%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5432   +/-   ##
=======================================
  Coverage   87.59%   87.59%           
=======================================
  Files         584      584           
  Lines       46408    46408           
  Branches     7021     7021           
=======================================
  Hits        40650    40650           
  Misses       5758     5758           

Flag	Coverage Δ
unittests	87.59% <ø> (ø)

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