For historical reasons, StEntry always did hover tracking when you had
visible hint_text, even if track_hover was FALSE. Remove that special
case, and make entries track hover just like all other widgets do.
If we actually needed to distinguish hovered-with-hint-text from
hovered-without-hint-text (which, at the moment, we don't), we could
do that by setting separate CSS for :hover and :hover:indeterminate.
https://bugzilla.gnome.org/show_bug.cgi?id=642483
1a639f0b17