Add new target support for ArrayBuffer and TypedArray (#4369)

JerryScript-DCO-1.0-Signed-off-by: bence gabor kis kisbg@inf.u-szeged.hu

tests/jerry/es.next/new-target-for-typedarray-and-arraybuffer.js

@@ -0,0 +1,25 @@
+/* Copyright JS Foundation and other contributors, http://js.foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+class MyInt32Array extends Int32Array {};
+var t1= new MyInt32Array([1,2]);
+
+assert(Object.getPrototypeOf(t1) == MyInt32Array.prototype)
+
+
+class MyArrayBuffer extends ArrayBuffer {};
+var t2= new MyArrayBuffer(8);
+
+assert(Object.getPrototypeOf(t2) == MyArrayBuffer.prototype)