Remove color-mix from CSS [v5-rc]

[remloyal]

Problem or Desire

Remove color-mix from CSS during packaging to achieve better compatibility

Proposal

The packaged core.min.css product should not contain color-mix

Implementation Details

No response

Additional Context

No response

[sy-records]

#2670 (comment)

I also think it can be kept.

[paulhibbitts]

Thanks for raising this issue @remloyal, please see my comments at #2670 (comment)

Based on those, I tend not to see this an issue needing to be addressed at this time. Have you run into a specific Browser problem with this issue?