strictEquality doesn't work with union types

[OlegYch]

Compiler version

3.5.1

Minimized code

val a = List(Some(true), Some(()), None)
a.exists(_ == None)

Output

Values of types Option[Boolean | Unit] and object None cannot be compared with == or !=.

Expectation

the code compiles

[Gedochao]

The original example misses the feature import (and is in script format).

import scala.language.strictEquality
@main def main() = {
  val a = List(Some(true), Some(()), None)
  a.exists(_ == None)
}