Use RefinedFunctionOf instead of FunctionOrMethod

Author: Linyxus

compiler/src/dotty/tools/dotc/cc/Capability.scala

@@ -703,7 +703,7 @@ object Capabilities:
  this(CapturingType(parent1, ann.tree.toCaptureSet))
  else
  t.derivedAnnotatedType(parent1, ann)
- case t @ FunctionOrMethod(_, _) if t.isAliasFun =>
+ case defn.RefinedFunctionOf(_) =>
  t // stop at dependent function types
  case _ =>
  mapFollowingAliases(t)