Fix #9341: add test

Author: liufengyun

tests/run/i9341.scala

@@ -0,0 +1,10 @@
+class T { def f: Int = 10 }
+class B extends T {
+  class C { B.super[T].f }
+  class D { B.super.f }
+  new C
+  new D
+}
+
+@main
+def Test = new B