Update WMWrapper when we get a new relayout call.

Or else previously we use the default WMWrapper (that has displayId
context = 0) and so the AppHandle input layer always get added to the
default display.

Bug: 397249815
Test: atest
Flag: com.android.window.flags.enable_bug_fixes_for_secondary_display
Change-Id: Iccf73790ca3be4bc8f922d399aa82b8be472210e