feature: Allow fewer braces for Scala 3.3.x

Follow up from scala/scala3#16297

Author: tgodzik

scalameta/dialects/shared/src/main/scala/scala/meta/Dialect.scala

@@ -794,6 +794,7 @@ object Dialect extends InternalDialect {
     Scala30,
     Scala31,
     Scala32,
+    Scala33,
     Paradise211,
     Paradise212,
     ParadiseTypelevel211,

scalameta/dialects/shared/src/main/scala/scala/meta/dialects/package.scala

@@ -150,7 +150,9 @@ package object dialects {
 
   implicit val Scala32 = Scala31
 
-  implicit val Scala3 = Scala32
+  implicit val Scala33 = Scala31.withAllowFewerBraces(true)
+
+  implicit val Scala3 = Scala33
 
   implicit val Scala3Future = Scala3
     .withAllowUnderscoreAsTypePlaceholder(true)

tests/shared/src/test/scala/scala/meta/tests/parsers/dotty/FewerBracesSuite.scala

@@ -4,8 +4,6 @@ import scala.meta._
 
 class FewerBracesSuite extends BaseDottySuite {
 
-  protected override implicit val dialect = dialects.Scala3.withAllowFewerBraces(true)
-
   test("simple") {
     runTestAssert[Stat](
       """|val firstLine = files.get(fileName).fold: