Always store last inset values in relayoutWindow

Last insets are currently set when updateResizingWindowIfNeeded
is called. However, sometimes the precondition in that method fails
so the method returns early before updating last inset values.
This causes issues if the call stack was from relayoutWindow since
relayoutWindow sends the new insets back to the client. The client
will then get the new values, but the server didn't store them as
the last seen values. This will cause bad behavior because the
next time insets are changed, the server may not update the
client since it doesn't think anything has changed.

This fix ensures that the server always updates the last inset values
when the client gets and update to ensure the value are always the
same.

Fixes: 70518605
Test: Issue in bug is fixed
Test: atest WindowManagerSmokeTest
Change-Id: Ic70da0b3caa02462df29395799d305eee7baf42d