Send IME control to client

Sends the IME control to the client by calling
InsetsStateController.onImeTargetChanged.

Furthermore, since the frame we use to calculate the insets isn't
necessarily the surface frame, we also need to pass down the
surface position such that the client can calculate the final
leash position correctly.

Test: Open IME
Bug: 111084606
Change-Id: Ifed8351b12d47f698efde504205bd7b77032d36b