Extract Function: Do not extract into lambda

idea/testData/refactoring/extractFunction/defaultContainer/nestedLambda.kt.after

@@ -0,0 +1,13 @@
+// PARAM_TYPES: kotlin.Int
+// PARAM_TYPES: kotlin.Int
+class A {
+    fun foo(a: Int, b: Int): Int {
+        return {
+            { i(a, b) }.invoke()
+        }.invoke()
+    }
+
+    fun i(a: Int, b: Int): Int {
+        return a + b - 1
+    }
+}