[parser] report invalid rest parameter errors in Arrow functions

test/message/arrow-invalid-rest-2.js

Index: test/message/arrow-invalid-rest-2.js
diff --git a/test/mjsunit/regress/regress-4654.js b/test/message/arrow-invalid-rest-2.js
similarity index 69%
copy from test/mjsunit/regress/regress-4654.js
copy to test/message/arrow-invalid-rest-2.js
index eb08b1126ead9f03c67d301bd0ee332cba4c0546..3517803d30256b09e78a1aa1f43817e733dc060e 100644
--- a/test/mjsunit/regress/regress-4654.js
+++ b/test/message/arrow-invalid-rest-2.js
@@ -1,5 +1,8 @@
 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
+//
+//
 
-assertEquals('hello\u0000foobar', 'hello\u0000foobar'.normalize('NFC'));
+var f = (a, ...x = 10) => x;
+f(1, 2, 3, 4, 5);