Lift return out fix: do not suggest for labeled returns

idea/testData/inspectionsLocal/liftOut/whenToReturn/localReturns.kt

@@ -0,0 +1,13 @@
+// PROBLEM: none
+// WITH_RUNTIME
+
+fun test(arg: String?): Int {
+    arg?.let {
+        <caret>when (arg) {
+            "" -> return 1
+            else -> return@let 42
+        }
+        42
+    }
+    return 0
+}