airframe-di: Support generating a new instance A with Scala 3

[xerial]

Filed a feature request here: lampepfl/dotty-feature-requests#153 and asked a help at here https://gitter.im/lampepfl/dotty?at=5fe8278169ee7f0422c6fb26

[xerial]

This is no longer necessary as we can drop in-trait injection support in Scala 3