DE53956 WCAG 2.2 Update input style to match core

[mostlyfabulous]

DE53956: [WCAG2.2] Activity Feed > Several buttons with enclosed focus not meeting Focus appearance requirements Fixes:

• "Browse Files" under Upload a File dialog

[ghost]

:tada: This PR is included in version 3.3.1 :tada:

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

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