PointerLocationView: Reconfigure trace bitmap on display changes

The pointer trace/trail is drawn on a separate bitmap layer in the
PointerLocationView to avoid having to redraw the trail on each frame.
Whenever the display size changes, like when displayId 0 is remapped
from the internal display to an external display in a foldable device,
the trace bitmap should be reconfigured.

Bug: 407039712
Flag: EXEMPT bug fix
Test: Presubmit
Change-Id: Ifbbff80b83f035657cc88e1a905e55f03d4264bc