This CL manually migrates
IInputMethodManager#addVirtualStylusIdForTestSession(),
which was added recently [1], from manual permission check with
Context#enforceCallingPermission(INJECT_EVENTS)
to code-generation check with
@EnforcePermission("INJECT_EVENTS").
There should be no observable semantic behavior change in this CL.
[1]: I7399c0a56c04f024d65c16d459818cc2c5cdbc7f
d96ef57bc4
Bug: 34886274
Bug: 210039666
Bug: 232058525
Bug: 237316307
Test: atest CtsInputMethodTestCases:InputMethodManagerTest#testShowInputMethodPickerFromSystemProtection
Change-Id: Ida227d417496dd91c071c38ca0be003529764de4
80b2911d01