fix: compatibility with "moduleResolution": "Node16"

[demensky]

If the project uses moduleResolution with the value Node16 and rollupTypes is enabled, then an error occurs:

Error: [vite:dts] Internal Error: getResolvedModule() could not resolve module name "./path/to/file"

If we do not remove .ts completely, but replace it with .js, then the problem disappears.