Remove unused parameters from PendingControlRequest

PendingControlRequest is only used anymore for storing a controlled
animation until all types are ready to animate (show). Therefore, we can
remove some parameters that were previously needed and pass them
directly when the show animation is executed.

Fix: 323319146
Test: atest ImeInsetsControllerTest
Flag: EXEMPT removing unused variables
Change-Id: I9ba60d558259055469a7e46a224ba8be24df601d