"Lift return / assignment": do not suggest for else arguments

idea/testData/inspectionsLocal/liftOut/ifToAssignment/elseIfOnly.kt

@@ -0,0 +1,15 @@
+// PROBLEM: none
+
+fun foo(a: Boolean, b: Boolean): String {
+    var res = ""
+    if (a) {
+
+    }
+    else <caret>if (b) {
+        res += "b"
+    }
+    else {
+        res += "!b"
+    }
+    return res
+}