Fix some tree-sitter :match regexps

Fix some tree-sitter :match regexps

The shy groups were caught by modified versions of the GNU ELPA
packages xr and relint:
- https://github.com/mattiase/xr/pull/6
- https://github.com/mattiase/relint/pull/14

* lisp/progmodes/ruby-ts-mode.el (ruby-ts--s-p-query): Quote special
character in regexp.
* lisp/progmodes/java-ts-mode.el (java-ts-mode--font-lock-settings):
* lisp/progmodes/js.el (js--plain-method-re):
(js--treesit-font-lock-settings):
* lisp/progmodes/rust-ts-mode.el (rust-ts-mode--font-lock-settings):
* lisp/progmodes/typescript-ts-mode.el
(typescript-ts-mode--font-lock-settings): Replace character
alternative [\\d], which matches '\' or 'd', with the most likely
intention [0-9].  Fix shy groups mistyped as optional colons.
Remove unneeded numbered :match group in rust-ts-mode (bug#64019).