Fix CtsSensorRatePermissionTestCases for visible background users

All tests that require toggling microphone sensor privacy toggle are
skipped for visible background users as sensor privacy toggles are now
restricted to the current user only

Bug: 366138145
Flag: EXEMPT test fix
Test: Tested on seahawk_md
Test: atest CtsSensorRatePermissionTestCases
Test: atest --user-type secondary_user_on_secondary_display CtsSensorRatePermissionTestCases
Change-Id: I5b5fca0f896a90f7ca9b009664e4f303a4747971