Stop loading animation for addtional cursor type.

In the test below it only expects MockSprite#setIcon() being called
once, but with animation it may be called multiple times.

Bug: 144947344
Test: atest PoitnerControllerTest#updatePointerIcon
Change-Id: I5c4908fb8301cae144fd637c831f2012a35862e3
Merged-In: I5c4908fb8301cae144fd637c831f2012a35862e3