Fix some tests that turn off Safety Center.

Safety Center cannot be turned off at runtime anymore on UDC+.
Considering it can still be turned off on T, and when the flag
to remove the Device Config is false, keeping the tests but
skipping them when SC cannot be turned off.

Bug: 361239868
Bug: 361247419
Test: atest CameraMicIndicatorsPermissionTest && atest AccessibilityPrivacySourceTest
Flag: TEST_ONLY
LOW_COVERAGE_REASON=TEST_ONLY
Relnote: N/A
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:59d4f61675784b876d67d9bb2c79d1a856655901)
Merged-In: I63b861c0ec0e837e5fd3292a4de2eb190eb3faad
Change-Id: I63b861c0ec0e837e5fd3292a4de2eb190eb3faad
3 files changed