Fix type-intersection-related test data

The order of types enumeration has been changed recently:
previously it was collected at first from a child and then from
its parent, but now it's being collected in order of appearance

compiler/testData/diagnostics/testsWithStdLib/contracts/smartcasts/throwsEffect.kt

@@ -61,5 +61,5 @@ fun testAtLeastOnceFlow(x: Any?) {
         <!DEBUG_INFO_SMARTCAST!>x<!>.length
     } while (x != null)
 
-    <!DEBUG_INFO_SMARTCAST!>x<!>.length
-}
+    <!DEBUG_INFO_SMARTCAST!>x<!>.<!UNREACHABLE_CODE!>length<!>
+}