Error message doesn't disambiguate names enough

[Blaisorblade]

In #4180, note that the error message is very misleading; even after this comparison is allowed, I'd expect this issue to apply to other examples:

object Bar {
  true == (true: java.lang.Boolean)
}

gives

-- Error: /tmp/scastie843852333271942738/src/main/scala/main.scala:3:2 ---------
3 |  true == (true: java.lang.Boolean)
  |  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |  Values of types Boolean and Boolean cannot be compared with == or !=