Correct picture-in-picture setting behavior for managed profile.

- Show picture-in-picture setting in the app info page for managed
profile.
- Navigate to work app setting instead of non-work app setting on
tapping setting icon from picture-in-picture window. This requires
correctly processing passed-in UserHandle to fetch the right package
info.

Bug: 71592457
Test: make RunSettingsRoboTests
Change-Id: Id3dd04e88a57ae3d8c319c17615992637128589b