[EuiSuperSelect + EuiFormRow] Field label doesn't turn blue when item in focus

[brittanyjoiner15]

Might be related to #5091 but also might not.

That same field label does not turn blue when active, unlike other fields.

Active field EuiSuperSelect component that we're having issues with in #5091
(black default text color on field label)

An active EuiSelect component on same form
(blue highlight/active text color on field label)

Another active EuiSuperSelect component on same form
(blue highlight/active text color on field label)

[cee-chen]

I investigated this while fixing #5091 and it's unrelated, but I was able to find a workaround after observing how EuiColorPicker maintained focus state on its label 🎉 Both fixes should be in #5097!

As a quick note, accessibility is unaffected as the focus state is where it belongs (within the popover/dropdown), so it's purely a visual bug.

[brittanyjoiner15]

woohoo! thanks @constancecchen !!