Pointer Icon Refactor: Update PointerController tests

When PointerChoreographer is enabled, the PointerControllers are used in
a different way, where the presentation mode is set once and never
changed. This should be reflected in the tests.

When the flag is enabled, ensure that the tests call the APIs in the
expected manner.

Bug: 293587049
Bug: 315538661
Test: atest libinputservice_test
Change-Id: I24205c4c02484c4a28946c152a2c507bfc371b8e