Can't compare Scala and Java Booleans

```scala
object Bar {
  true == (true: java.lang.Boolean)
}
```
gives

```scala
-- 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 !=
```