convert @babel/helper-function-name to TypeScript (#12486)

Co-authored-by: Huáng Jùnliàng <jlhwung@gmail.com>

lib/babel-packages.js.flow

@@ -157,3 +157,10 @@ declare module "@babel/helper-validator-option" {
     arr: $ReadonlyArray<string>
   ): string;
 }
+
+declare module "@babel/helper-function-name" {
+  declare export default function helperFunctionNamefunction(
+    options: any,
+    localBinding?: boolean
+  ): any;
+}