Show other profile tab if 0 apps in current profile and >1 in the other.

Currently if we have 0 browser apps in work profile and >1 in personal,
and we try open a link from the  work profile, the personal profile
intent resolver is launched. We handle this gracefully by showing the
work tab and the no apps found empty state screen, instead of the
cross profile intents disabled.

Other changes in this commit:
- Handle all empty state screens from a single method
- All empty state screens are now shown from ResolveActivity#onPostListReady.
This was needed to guarantee consistency when showing the header.
- Always create the header exactly once for the lifetime of the intent
resolver/share sheet. Before it was re-created when swiping back to
the initial tab.
- Always show the header text when the tabbed view is enabled.

Fixes: 148536209
Test: manual
Test: atest ChooserActivityTest
Test: atest ResolverActivityTest

Change-Id: I737f1e8f864ae1108af7ec3ba8a1fa0f10b383b0