bug#68246: 30.0.50; Add non-TS mode as extra parent of TS modes

[Eli Zaretskii]

> From: Yuan Fu <casouri@gmail.com>
> Date: Sat, 13 Jan 2024 18:19:26 -0800
> Cc: João Távora <joaotavora@gmail.com>,
>  Stefan Monnier <monnier@iro.umontreal.ca>,
>  68246@debbugs.gnu.org
> 
> Now come back to the subject. What we can do now, it seems, is to
> apply this on master and observe what breaks?

I agree, and Stefan evidently also agrees, since he already installed
this on master, with suitable changes to NEWS and the ELisp reference
manual.