Fix a bug which caused incorrectly generated js when you call extension literal from extension function.

js/js.translator/testFiles/expression/misc/cases/extensionLiteralCalledInsideExtensionFunction.kt

@@ -0,0 +1,18 @@
+package foo
+
+fun A.create(init : A.() -> Unit) : A {
+  init()
+  return this
+}
+
+fun box() : Boolean {
+  val a = A().create {
+    c = 1 + t
+  }
+  return a.c == 4
+}
+
+class A() {
+  val t = 3
+  var c = 2
+}