Fix TypeTreeTypeTest to not match TypeBoundsTrees

[nicolasstucki]

Also see TypeBoundsTreeTypeTest in QuotesImpl and Quotes spec

   *           +- TypeTree ----+- Inferred
   *           |               +- ...
   *           |               ...
   *           +- TypeBoundsTree

Fixes #19480

[nicolasstucki]

The original issue was that in the following pattern match the TypeBoundsTree went into the TypeTree branch.

trait TreeMap:
  def transformTree(tree: Tree)(owner: Symbol): Tree = 
    tree match 
      ...
      case tree: TypeTree => ...
      case tree: TypeBoundsTree => ...
      ...

[ghik]

I tested this and it works with a regular type parameter, but still does not work with a higher-kinded parameter, e.g.

val t = '{class K[T[_]]}.asTerm

Now failing with the following exception:

Exception occurred while executing macro expansion.
scala.MatchError: LambdaTypeTree(List(TypeDef("_$1", TypeBoundsTree(Inferred(), Inferred()))), TypeBoundsTree(Inferred(), Inferred())) (of class java.lang.String)
	at scala.quoted.Quotes$reflectModule$TreeMap.transformTree(Quotes.scala:4955)
	at scala.quoted.Quotes$reflectModule$TreeMap.transformTree$(Quotes.scala:4926)
        ...

[nicolasstucki]

val t = '{class K[T[_]]}.asTerm

works now

[jchyb]

LGTM! Sorry for not looking at this sooner, I must have somehow missed this