Allow widget hosts to see widgets from locked profiles.

Avoid launchers removing widgets by handling case
where a widget host is in an unlocked parent user and
widget providers are in a locked managed profile.
For this case allow launcher to see the widgets from
non-crypto aware widget providers.
Mask out widgets from locked profiles.
Fix issue with widgets not being masked when adding
new widgets when user is locked / quiet or package
is suspended.

Bug: 26721345
Bug: 27037962
Change-Id: I60b5bd934c1547110e374ab4eefbee6aade37dc6