Functions returning Nothing are indexed even when alias import is used

idea/testData/resolve/partialBodyResolve/IfNotIsMyErrorWithAliasImport.dump

@@ -0,0 +1,12 @@
+Resolve target: value-parameter val p: kotlin.Any smart-cast to kotlin.String
+----------------------------------------------
+import kotlin.Nothing as MyNothing
+
+fun myNothingFun(): MyNothing = throw Exception()
+
+fun foo(p: Any) {
+    if (p !is String) {
+        myNothingFun()
+    }
+    println(<caret>p.length())
+}