Revert "[BREAKING CHANGE] LookupInputWidget: Remove the silly 'input' parameter"
Revert "[BREAKING CHANGE] LookupInputWidget: Remove the silly 'input' parameter"

Per T86851, we'll do this differently.

This reverts commit e578d3e71987d4f9b4d09803544e43e587b4b99f.

Bug: T86851
Change-Id: Ia8353605997fce59f26d1c30297a49a8c3f2eb5e
wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui