[16/n Dispatcher refactor] Move transferWallpaperTouch

In this CL we move transferWallpaperTouch to DispatcherTouchState
subclass.

Bug: 367661487
Bug: 245989146
Test: atest inputflinger_tests
Flag: EXEMPT refactor

Change-Id: I41ec66dcc56e4da395ab2b9dd7786e00fda5037d
2 files changed