Update to new extension syntax

Author: nicolasstucki

library/src/scala/internal/quoted/Matcher.scala

@@ -96,13 +96,13 @@ private[quoted] object Matcher {
       case _ => notMatched
     }
 
-    private given treeListOps: extension (scrutinees: List[Tree]) {
+    private extension treeListOps on (scrutinees: List[Tree]) {
       /** Check that all trees match with =?= and concatenate the results with && */
       def =?= (patterns: List[Tree])(using Context, Env): Matching =
         matchLists(scrutinees, patterns)(_ =?= _)
     }
 
-    private given treeOps: extension (scrutinee0: Tree) {
+    private extension treeOps on (scrutinee0: Tree) {
 
       /** Check that the trees match and return the contents from the pattern holes.
        *  Return None if the trees do not match otherwise return Some of a tuple containing all the contents in the holes.

library/src/scala/tasty/Reflection.scala

@@ -419,7 +419,7 @@ class Reflection(private[scala] val internal: CompilerInterface) { self =>
   //   QUOTES   //
   ////////////////
 
-  given  QuotedExprOps: extension (expr: scala.quoted.Expr[?]) {
+  extension QuotedExprOps on (expr: scala.quoted.Expr[?]) {
     /** View this expression `quoted.Expr[T]` as a `Term` */
     def unseal(using ctx: Context): Term =
       internal.QuotedExpr_unseal(expr)