bug#74339: 30.0.92; CC Mode stomps C TS Mode

[Stefan Monnier]

> Like the patch below.  Is it okay?
[...]
> +(setq major-mode-remap-defaults
> +      (assq-delete-all 'ruby-mode major-mode-remap-defaults))
> +

So, this adds `ruby-mode.el` and `ruby-ts-mode.el` to the list of files
which break our coding convention that loading a file should not affect
Emacs's behavior.

I understand we decided back in Emacs-29 that it was the least bad
solution to make it easy for users to use the new TS major modes, but
this was back in Emacs-29.  We should look for ways to remove this kind
of hack rather than spreading it to more files.


        Stefan