Whether the pointer event is primary or not generally matters for the
context where all input is done by the same event, so users can
_ignore_ non-primary events since they are likely from users clicking
something else with their other fingers.
Having it only on a FingerId made it useless, since it's usually used
to avoid multi-touch, but if you start mapping on touch event you
already can track things like that yourself.
Fixes#3943.
Co-authored-by: daxpedda <daxpedda@gmail.com>
c8c1eca3c7