KT-13830: support case when LHS of augmented assignment is something different than qualified expression or array access

js/js.translator/testData/box/operatorOverloading/augmentedAssignmentLhs.kt

@@ -0,0 +1,19 @@
+package foo
+
+object Host {
+    var result: String = ""
+        get
+        private set
+
+    operator fun plusAssign(s: String) {
+        result += s
+    }
+}
+
+fun bar() = Host
+
+fun box(): String {
+    bar() += "O"
+    bar() += "K"
+    return Host.result
+}