This replicates the fix for the TypeScript language for
https://github.com/zed-industries/zed/issues/5239 in
https://github.com/zed-industries/zed/pull/12505 for the TSX and
JavaScript languages, fixing
https://github.com/zed-industries/zed/issues/12510 and fixing
https://github.com/zed-industries/zed/issues/12509 .

See
https://github.com/zed-industries/zed/pull/12505#issuecomment-2141002505
.

Keep in mind I don't have a proper Zed local development environment
setup to test these simple changes.

Release Notes:

- Fixed TSX shorthand property syntax highlighting
([#12510](https://github.com/zed-industries/zed/issues/12510)).
- Fixed JavaScript shorthand property syntax highlighting
([#12509](https://github.com/zed-industries/zed/issues/12509)).