Make overloaded in Quotes return a Term instead of an apply.

It calls `applyOverloaded`, but the interaction of named and default parameters means
that sometimes arguments have to be lifted out and a block is returned instead of an apply.

Author: odersky

compiler/src/scala/quoted/runtime/impl/QuotesImpl.scala

@@ -459,11 +459,11 @@ class QuotesImpl private (using val ctx: Context) extends Quotes, QuoteUnpickler
         val denot = qualifier.tpe.member(name.toTermName)
         assert(!denot.isOverloaded, s"The symbol `$name` is overloaded. The method Select.unique can only be used for non-overloaded symbols.")
         withDefaultPos(tpd.Select(qualifier, name.toTermName))
-      def overloaded(qualifier: Term, name: String, targs: List[TypeRepr], args: List[Term]): Apply =
-        withDefaultPos(tpd.applyOverloaded(qualifier, name.toTermName, args, targs, Types.WildcardType).asInstanceOf[Apply])
+      def overloaded(qualifier: Term, name: String, targs: List[TypeRepr], args: List[Term]): Term =
+        withDefaultPos(tpd.applyOverloaded(qualifier, name.toTermName, args, targs, Types.WildcardType))
 
-      def overloaded(qualifier: Term, name: String, targs: List[TypeRepr], args: List[Term], returnType: TypeRepr): Apply =
-        withDefaultPos(tpd.applyOverloaded(qualifier, name.toTermName, args, targs, returnType).asInstanceOf[Apply])
+      def overloaded(qualifier: Term, name: String, targs: List[TypeRepr], args: List[Term], returnType: TypeRepr): Term =
+        withDefaultPos(tpd.applyOverloaded(qualifier, name.toTermName, args, targs, returnType))
       def copy(original: Tree)(qualifier: Term, name: String): Select =
         tpd.cpy.Select(original)(qualifier, name.toTermName)
       def unapply(x: Select): (Term, String) =

library/src/scala/quoted/Quotes.scala

@@ -776,10 +776,10 @@ trait Quotes { self: runtime.QuoteUnpickler & runtime.QuoteMatching =>
       def unique(qualifier: Term, name: String): Select
 
       /** Call an overloaded method with the given type and term parameters */
-      def overloaded(qualifier: Term, name: String, targs: List[TypeRepr], args: List[Term]): Apply
+      def overloaded(qualifier: Term, name: String, targs: List[TypeRepr], args: List[Term]): Term
 
       /** Call an overloaded method with the given type and term parameters */
-      def overloaded(qualifier: Term, name: String, targs: List[TypeRepr], args: List[Term], returnType: TypeRepr): Apply
+      def overloaded(qualifier: Term, name: String, targs: List[TypeRepr], args: List[Term], returnType: TypeRepr): Term
 
       def copy(original: Tree)(qualifier: Term, name: String): Select