feat: add polyfills insertion for ES Next used features

js/js.translator/testData/box/polyfills/isView/isViewWithExistedIntrinsic.kt

@@ -0,0 +1,18 @@
+// WITH_STDLIB
+// TARGET_BACKEND: JS_IR
+// FILE: main.js
+ArrayBuffer.isView = function isView(a) {
+    isView.called = true;
+    return a != null && a.__proto__ != null && a.__proto__.__proto__ === Int8Array.prototype.__proto__;
+}
+
+// FILE: main.kt
+fun box(): String {
+    val intArr = intArrayOf(5, 4, 3, 2, 1)
+    val result = IntArray(5).apply { intArr.copyInto(this) }
+
+    assertEquals(result.joinToString(","), intArr.joinToString(","))
+    assertEquals(js("ArrayBuffer.isView.called"), true)
+
+    return "OK"
+}

js/js.translator/testData/box/polyfills/isView/isViewWithoutExistedIntrinsic.kt

@@ -0,0 +1,15 @@
+// WITH_STDLIB
+// TARGET_BACKEND: JS_IR
+// FILE: main.js
+ArrayBuffer.isView = undefined;
+
+// FILE: main.kt
+fun box(): String {
+    val intArr = intArrayOf(5, 4, 3, 2, 1)
+    val result = IntArray(5).apply { intArr.copyInto(this) }
+
+    assertEquals(result.joinToString(","), intArr.joinToString(","))
+    assertEquals(js("ArrayBuffer.isView.called"), js("undefined"))
+
+    return "OK"
+}