Remove Color Randomizer from 6.3

[annezazu]

In testing 6.3 beta 3, I noticed that the "randomize colors" was listed as an option in Styles. This is an experimental option for Gutenberg and, unless something changed, should not be in 6.3:

Furthermore, I can still see it listed as an unworkable button in GB 16.1.1 so something must have gone wrong here. Here are the related PRs for this feature in case it helps: #40988 #51539

Here's a video of the current experience:

remove.color.randomizer.mov

cc @tellthemachines @ramonjd as Core Editor tech leads!

[ramonjd]

Just checking the branches. Here's what I'm seeing:

Gutenberg wp/6.3

Gutenberg trunk

Core trunk (6.3-beta3-56130-sr)

Very curious... it appears it should only kick in when window.__experimentalEnableColorRandomizer is set to true

window.__experimentalEnableColorRandomizer doesn't appear in the global context in Core trunk 🤔

I'll have a dig around

[tellthemachines]

Looks like we need to add back the randomizeThemeColors check that was removed here

[annezazu]

Amazing sleuthing. Thank you for the quick work!