Fix CTS test where permission is not held.

This happens because acquiring / releasing permissions is an operation
that is "static": it happens as a side effect of calls rather than being
comparmentalized; which can cause racyness if separate threads are
requesting separate permissions.

Bug: 221401739
Test: atest CtsSafetyCenterTestCases
Change-Id: Ib2e890cf9fbaecd7545b492b20ad0c50d0b56f1b