Add missing Scala 3 benchmark for playJsonJsoniter using Scala.js

Author: plokhotnyuk

jsoniter-scala-benchmark/js/src/main/scala-3/com/github/plokhotnyuk/jsoniter_scala/benchmark/Main.scala

@@ -951,6 +951,7 @@ object Main {
       B("circeJsoniter")(benchmark.circeJsoniter()),
       B("jsoniterScala")(benchmark.jsoniterScala()),
       B("playJson")(benchmark.playJson()),
+      B("playJsonJsoniter")(benchmark.playJsonJsoniter()),
       B("smithy4sJson")(benchmark.smithy4sJson()),
       B("uPickle")(benchmark.uPickle()),
       B("zioJson")(benchmark.zioJson())