Unsupported CachedThisType

[pshirshov]

The following snippet fails on dotty:

class InnerTagFixture {
  trait Make[T] {
    final def from[I <: T : Tag](function: => I): Unit = {

    }
  }
  class InnerTagIssue  {
    new Make[InnerTagIssue.this.type] {
      from(InnerTagIssue.this: InnerTagIssue.this.type)
    }
  }
}