WikimediaUI theme: Restore `:hover:focus` border color on TextInputWidgets
WikimediaUI theme: Restore `:hover:focus` border color on TextInputWidgets

Regression from Ia732b72ed63928c5744455312769e6cd5019affe.
Also we have no other CSS-only option as
Ie70adbf0e4fd3adb8514f65792edde46202a41bd is having side-effects.

Change-Id: I9af98fb969fe561c41fd8b5196137c772f6c219d

wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui