Stop calling InputMonitor::pilferPointers

This API is deprecated, and is about to be removed. To facilitate this,
we convert the existing usages to be calling InputManager.

Long term, the entire InputMonitor.java should be removed.

Clients should be using SPY windows instead.

Bug: 323450804
Test: none
Flag: EXEMPT refactor
Change-Id: I66d2088ee03954c3caf819c06b8528fc0f49822b