PointerChoreographer: Add drawing tablet support

PointerChoreographer does not yet support drawing tablets. Add support
by creating a MousePointerController for each drawing tablet that is
connected. Use a MousePointerController so that the default icon is the
same as for a mouse (arrow) instead of for a stylus (no icon).

The icon will only show while the stylus is hovering or touching.

Bug: <329849066>
Test: atest inputflinger_tests
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:4c977a4ccaad3203929fb59815bebc4fe1cbfb5f)
Merged-In: I0cbb4a8efc8fd5e50ddfdad2b60df0195a3dce16
Change-Id: I0cbb4a8efc8fd5e50ddfdad2b60df0195a3dce16
24D1-dev is based on 24Q2-release. Therefore, we merged this CL to 24D1-dev.