Update Work profile settings

Change work apps toggle to a primary toggle
make Xprofile contact search toggle disable/enable when work profile is turned off
Add footer and change strings
Add tests

Test: atest ContactSearchPreferenceControllerTest, atest WorkModePreferenceControllerTest

Bug: 253009702 275538029
Change-Id: I3b2044a5fe3f2aff0748d66e701a3f0d7667ab7a