bug#42889: 28.0.50; make-pointer-invisible t should work also for navigation commands

[Eli Zaretskii]

> From: Stefan Kangas <stefan@marxist.se>
> Date: Sun, 16 Aug 2020 07:12:54 -0700
> 
> Please consider the following feature request:
> 
> 0. emacs -Q
> 1. (setq make-pointer-invisible t)
> 2. M-x customize-group RET RET
> 3. Move mouse pointer over e.g. "Editing" to highlight it
> 4. C-n C-p C-f C-b
> 
> Result: "Editing" is still highlighted.
> 
> Desired result: "Editing" is _not_ highlighted.

I think it should be very easy to add such a feature, and I'm willing
to help by advice.  Want to give it a try?