window magnification overlap with bottom bar when mouse or keyborad connected

With this change, window magnification bounds overlaps with the bottom
system gesture insets when a mouse or a keyboard is connected to the
device.

This essentially reverts the behavior introduced with a flag
update_window_magnifier_bottom_boundary but only enabled when desktop
like experience is provided.

Bug: 419389153
Test: WindowMagnificationControllerTest
Test: WindowMagnificationAnimationControllerTest
Flag: com.android.systemui.update_window_magnifier_bottom_boundary_with_mouse
Change-Id: I6e168b3dbe1dbb52b1ac831c5634709898c59382