Update PointerIcon_Delegate following commit fd8666d

Change Ic42d0ec3 calls a new method in PointerIcon that is not useful
for layoutlib and triggers a NullPointerException. This creates an empty
delegate for this method.

Bug: 74062470
Test: layoutlib tests
Change-Id: Ie7eef87d56845506931765b8ab9764e9f72bdbe8