[5.0] Dark Mode: MFA button

[Quy]

Partial Pull Request for Issue #41794.

Summary of Changes

Don't use outline button in order to be visible in dark mode.

Actual result BEFORE applying this Pull Request

Expected result AFTER applying this Pull Request

[HLeithner]

@wilsonge please review and we need a test

[brianteeman]

Don't know if it matters or not but this changes the button to solid from an outline button in light and dark mode

[Quy]

It should be fine as it has the same style as here:

[wilsonge]

We probably do need to fix the outline color to match what the main button is. However it also doesn’t hurt to unify the styling across core (if we aren’t using the outline class elsewhere)

[HLeithner]

rc2 is coming soon, which marks the end of non critical PRs.

[Hackwar]

I have tested this item ✅ successfully on dae9e0f

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[chmst]

I have not tested this item.

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[chmst]

I have tested this item ✅ successfully on dae9e0f

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[richard67]

RTC

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[bembelimen]

I agree with @wilsonge that the overall outline button definition should be fixed (happens hopefully with #42010), as this PR fixes the issue, I'll merge it.

[bembelimen]

Thanks