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

[Eli Zaretskii]

> Cc: 68246@debbugs.gnu.org
> From: João Távora <joaotavora@gmail.com>
> Date: Thu, 4 Jan 2024 23:48:48 +0000
> 
> We _don't_ want  x-mode-hook to run when we activate
> x-ts-mode.  Or do we?

We don't, because FOO-mode-hook usually assumes all kinds of things
that are generally not true for FOO-ts-mode.