CSS active class color do not update with chosen color scheme

[sayedwp]

When the publish settings section opens, an active class is applied to it. And when the color scheme changes, the color should change by the color scheme.

The same thing would happen if we add active class to any button in WordPress admin.

Originally: Please see https://core.trac.wordpress.org/ticket/39896#comment:115

[westonruter]

@helen It looks like maybe this is something that was missed in [34948]?

[helen]

I guess this is the first time we're actually using that .active class for something besides documentation. 42236.diff​ fixes it for me in core's color schemes - not sure what people are doing to generate custom ones, and I believe a number of plugins will need to be updated accordingly. So, testing and feedback appreciated.

[sayedwp]

Looking good now 👍

Without focus and active class:

With Focus and active class:

[sayedwp]

Changing color as expected.

[helen]

In 41984:

Buttons: Ensure active styling applies to both :active and .active.

props sayedwp, helen.
fixes #42236.