What does this PR do?

Clojure syntax highlighting hasn't been working even though the feature was requested in #3926 and, later, added in #3912. This is due to the original feature PR referencing a nonexistent WASM artifact that was expected to be hosted and provided in the repo, that hosts the Clojure tree-sitter grammar and parser sources but doesn't provide such artifacts.

This PR fixes this by switching to using an auto-generated WASM artifact (using the official and shared tree-sitter GitHub Actions workflows) hosted and provided in my own repo forked from the original.

Fixes #11279.

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