fix(auth): Fix login autofill on login

Author: cadivus

packages/authenticator/amplify_authenticator/lib/src/widgets/form.dart

@@ -167,11 +167,12 @@ class AuthenticatorFormState<T extends AuthenticatorForm>
 
   @override
   Widget build(BuildContext context) {
-    final formKey = InheritedAuthenticatorState
-        .of(context)
-        .formKey;
+    final formKey = InheritedAuthenticatorState.of(context).formKey;
     if (widget.child != null) {
-      return Form(key: formKey, child: AutofillGroup(child: widget.child!));
+      return Form(
+        key: formKey,
+        child: AutofillGroup(child: widget.child!),
+      );
     }
 
     final runtimeActions = this.runtimeActions(context);