Ensure AccessibilityService APIs clear binder identity after initial permission check

Bug: 277101123
Test: atest CtsAccessibilityTestCases
Test: atest CtsAccessibilityServiceTestCases
Test: atest FrameworksCoreTests (with failed tests were all existing
failed tests)

Change-Id: Ibc2c5eb2d94da41f60245e41f9853bf6ba3937f1
2 files changed