## Summary
This PR removes a trailing semicolon after an interface definition in
the custom TypeScript section of `ruff_wasm`. Currently, this semicolon
triggers the error "TS1036: Statements are not allowed in ambient
contexts" when including the file and compiling with e.g `tsc`.
## Test Plan
I made the change, ran `wasm-pack` and copied the generated directory
manually to my `node_modules` folder. I then compiled a file importing
`@astral-sh/ruff-wasm-web` again and confirmed that the compilation
error was gone.
b0b8b06241