bug#67486: 30.0.50; Cursor freezes recentering atop line-prefix + display props

[Eli Zaretskii]

> From: "J.P." <jp@neverwas.me>
> Date: Mon, 27 Nov 2023 06:39:19 -0800
> 
> >From emacs -Q:
> 
>   1. Eval
> 
>      (with-current-buffer (pop-to-buffer (get-buffer-create "*test*"))
>        (dotimes (_ 2)
>          (insert #("012\n" 0 1 (line-prefix (space :width 1) display "a"))))
>        (forward-line -1))
> 
>   2. Hit C-l twice
> 
>   3. Try C-f, C-b, C-n, C-p, etc.

Thanks, should be fixed now on the emacs-29 branch.