Reload grammars in extensions when they are updated on disk (#7531)

Release Notes:

- N/A

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Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>
Co-authored-by: Marshall <marshall@zed.dev>
7b03e977e4Max Brunsfeld committed on 2/8/2024, 12:39:11 AM· committed by GitHubparentf2a4dba
6 files changedLine totals unavailable