[18/n Dispatcher refactor] Move pilferPointers

In this CL we move pilferPointers to the DispatcherTouchStates subclass.

Bug: 367661487
Bug: 245989146
Test: atest inputflinger_tests
Flag: EXEMPT refactor
Change-Id: I49c5760b79e6feab101fc381ec83bd91288bde4c
2 files changed