Improve syntax highlighting

[rrudakov]

Fix a few issues with syntax highlighting I discovered.

Before:

After:

There were failing tests in clojure-ts-mode-font-lock-test.el (not sure how did they pass CI before), those are fixed now.

---

Before submitting a PR mark the checkboxes for the items you've done (if you
think a checkbox does not apply, then leave it unchecked):

• The commits are consistent with our contribution guidelines.
• You've added tests (if possible) to cover your change(s). Bugfix, indentation, and font-lock tests are extremely important!
• You've run M-x checkdoc and fixed any warnings in the code you've written.
• You've updated the changelog (if adding/changing user-visible functionality).
• You've updated the readme (if adding/changing user-visible functionality).

Thanks!

[rrudakov]

Looks like linter doesn't like ;; Package-Requires: ((emacs "30.1"))

[bbatsov]

@rrudakov I'm aware of this and I had opened purcell/package-lint#292

Overall it seems to me that aiming to support Emacs 29 doesn't make much sense due to the moving nature of the TreeSitter support, but package-lint needs to be updated for the CI to pass or we need to revert the changes dropping Emacs 29 support.

[rrudakov]

@bbatsov can we maybe merge it like this and deal with the linter separately?

[bbatsov]

Yeah, the linter is not an issue at all - I was just responding to the remark about it. At a glance your changes seem fine to me, but I wanted to take a closer look.

[bbatsov]

All the changes look good to me. Thanks!