WikimediaUI theme: Fix regression on SelectFileWidget icon/indicator visibility
WikimediaUI theme: Fix regression on SelectFileWidget icon/indicator visibility

Fixing regression that happened somewhere between
I9d0cbf5d069 and I84447dd66b4 resulting in icons/indicators not being visible
even if set.

Change-Id: I0078d35c8cdc9ac0ab302540df087c8f9319952e

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