bug#64019: 29.0.91; Fix some tree-sitter :match regexps

[Eli Zaretskii]

> From: Basil Contovounesios <contovob@tcd.ie>
> Cc: mattias.engdegard@gmail.com,  64019@debbugs.gnu.org
> Date: Mon, 12 Jun 2023 21:22:09 +0100
> 
> Eli Zaretskii [2023-06-12 11:37 -0400] wrote:
> 
> >> > If this one is wrong, then so is the regexp in cc-mode.el from this one 
> >> > was copied, right?
> >> 
> >> Right, but I was going to suggest fixing that on master rather than
> >> emacs-29, since it's been with us longer.
> >
> > I'd rather we fixed all non-trivial stuff like this on master.  We do
> > want the pretest end at some point this year, don't we?
> 
> Yes please!  Are you referring to the whole patch, or is the rest of it
> trivial enough for emacs-29?

The changes from "^..$" to "\\`..\\'" are fine.  The rest should be
discussed on a cased by case basis.  And those which should also be
fixed in CC Mode should be fixed on master in both.