[terra-form-select] Update focus indicators for Fusion theme

[cm9361]

Summary

What was changed:
The focus indicators were updated for the terra-form-select controls for the orion-fusion-theme.

Why it was changed:
The change was made so that the focus indicators would be consistent with others in the theme.

Testing

This change was tested using:

• WDIO
• Jest
• Visual testing (please attach a screenshot or recording)
• Other (please describe below)
• No tests are needed

Reviews

In addition to engineering reviews, this PR needs:

• UX review
• Accessibility review
• Functional review

Additional Details

This PR resolves:

UXPLATFORM-10318

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Thank you for contributing to Terra.
@cerner/terra

[eawww]

It doesn't look like the new focus style was applied to the invalid variant:

Noting that the big fuzzy focus indicator looks a tad strange while navigating the items but the borderless light blue background that would otherwise be used would be much further from meeting contrast requirements.

[cm9361]

@eawww - I fixed the invalid select control. Is there any change you would like me to make on the selection focus indicator?

[eawww]

Looking at this again, I don't think the giant glow on the secondary indicator is going to go over well. While I think that indicator just had the light blue background before,

that has a 1.1:1 contrast ratio which will actually disappear on some displays regardless of vision ability. So I'm not comfortable signing off on that.

After chatting with a few of my UX compatriots, I think just removing the outer glow from the indicator on the options will have to do for now. box-shadow: rgba(76, 178, 233, 0.5) 0px 0px 1px 3px inset;

Note: this still doesn't quite meet contrast requirements. I'm going to try to get a conversation started to get the standard Fusion focus styles updated.