fix: Random ENOENT errors in copy_file_or_directory on Windows

This happens for more or less the same files, usually on a batch update (eg. after typescript rebuilds a project and emits a lot of files). Looks like only `fs-extra` throws error, `fs` doesn't.

BTW, we don't need to use `pify` for `fse`, as `fs-extra` supports promises out of the box. But simply removing the `promisified.` prefix doesn't solve the issue.

src/helpers.js

@@ -143,7 +143,7 @@ async function copy_file_or_directory(source_path, destination_path) {
 
 	// console.log('COPY', source_path, 'to', destination_path);
 
-	return promisified.fse.copy(source_path, destination_path);
+	return fs.promises.copyFile(source_path, destination_path);
 }
 
 /**