Setup button bar padding before empty state handling

Otherwise we don't add the padding if we show the empty state
on the current profile. This caused a slight height jump when
swiping to the other profile.

Fixes: 158174328
Test: manual
Test: atest ChooserActivityTest
Test: atest ResolverActivityTest
Change-Id: I08c3f30716a8fb9a15e30088be6d274dc0869cac