Remove the red color of the 'required' asterisk.

Many things have changed since this issue's creation but the original problem still exists. Now tested on a D11-beta1 regarding the two most used themes Drupal core is shipped with out-of-the-box:

Public theme (Olivero) already did this job, and seems unaffected:

But the admin theme (Claro) still shows in red:

I would also raise a more generic problem here: the naming conventions of files in core/misc/icons/ sub-directory are a total mess: some of them describe their meaning (bad practice), and some are properly named after what they depicts (the proper way)

After patch

Issue summary should follow standard issue template. Currently has a broken image so screenshots need to be added.