Improve TypeScript highlights (#18525)

- Move function queries under constant queries to avoid uppercase
functions highlighted as constants
- Merge keywords and remove duplicates
- Highlights type aliases on import
- Highlights literal built-in types (null, undefined, true, false) as
`@type.builtin`

Confused about case-based queries, should they be rewritten?

Release Notes:

- N/A

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Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>