Avoid indirect call to AsPrismImpl (#1186)

* Avoid access to private module in quotes (see scala/scala3#13215)
* Make code more preformant

Author: nicolasstucki

core/shared/src/main/scala-3.x/monocle/internal/focus/features/as/AsGenerator.scala

@@ -2,18 +2,18 @@ package monocle.internal.focus.features.as
 
 import monocle.Prism
 import monocle.internal.focus.FocusBase
-import monocle.syntax.AsPrism
+import monocle.syntax.AsPrismImpl
 
 private[focus] trait AsGenerator {
-  this: FocusBase => 
+  this: FocusBase =>
 
   import macroContext.reflect._
 
   def generateAs(action: FocusAction.KeywordAs): Term = {
     import action.{fromType, toType}
 
     (fromType.asType, toType.asType) match {
-      case ('[f], '[t]) => '{ AsPrism[f, t] }.asTerm
+      case ('[f], '[t]) => AsPrismImpl[f, t].asTerm
     }
   }
 }