Support IME Window to show in secondary display (2/N).

ag/4643261 introduced process level configuration change.
Calling ActivityTaskManagerInternal.onImeWindowSetOnDisplay
for IME process to update display configuration & its resources.

Bug: 112585232
Test: atest ActivityManagerMultiDisplayTests#testImeWindowVisibilityForVirtualDisplay
Change-Id: Ie45fb566e3faa4c2757a523ecf7a3a83432ccecc