Specify pointer id when creating outside targets

For outside targets that are owned by the same uid, we don't obscure the
coordinates.

As part of the effort to always have the correct pointer id specified,
add the pointer id to the outside window targets.

In future CLs, we will introduce a strict requirement to have correct
pointers when adding pointer-based targets.

Bug: 211379801
Test: TEST=inputflinger_tests; m $TEST && $ANDROID_HOST_OUT/nativetest64/$TEST/$TEST
Change-Id: Ibeb80bc7545344fde63a8b4e8ddae4c0d20cb465