* lisp/textmodes/markdown-ts-mode.el: Improve.

* lisp/textmodes/markdown-ts-mode.el: Improve.

(markdown-ts-list-marker): Inherit from 'shadow' like in non-ts mode.
(markdown-ts-block-quote): Inherit from 'italic' like in non-ts mode.
(markdown-ts--treesit-settings): Use 'shadow' for parens in
'markdown-inline' only under 'inline_link' and 'image'.
Use @markdown-ts-block-quote for 'block_quote'.
Override with 'append' for links.
(markdown-ts--range-settings): Use global html parser for 'html_tag'
since its ranges are interconnected.
(markdown-ts-setup): Create the 'html' parser.

(cherry picked from commit 9e75d1815125178b4b8584faa02569d6b84fc0b5)