app-i18n/ibus-unikey: Fix depend on app-i18n/ibus
This commit fixes the breakage caused by commit
fab5df2eef030ab7d815a82592a727fc78390710
which removed the dedicated gtk3 USE flag.
With this commit, ibus-unikey now depends on app-i18n/ibus[gtk] when gtk3 USE flag
was set and app-i18n/ibus[gtk2] when not (due to required_use in app-i18n/ibus you
will be required to emerge app-i18n/ibus with gtk USE flag anyway but this is
something which should be addressed by package maintainer).
Package-Manager: Portage-2.3.5, Repoman-2.3.2