Extract Function: Do not report "Moving out of scope" warning on nested declarations

idea/testData/refactoring/extractFunction/controlFlow/outputValues/valuesUsedInLambdaOnly.kt

@@ -0,0 +1,13 @@
+class T(val n: Int)
+
+// SIBLING:
+fun foo() {
+    <selection>bar { t ->
+        val k = 1
+        t.n + k + 1
+    }</selection>
+}
+
+fun bar(f: (T) -> Int) {
+
+}