Use unqualified enum strings when generating serialized ids in the proto codec
diff --git a/lib/proto_info_codec.dart b/lib/proto_info_codec.dart
index 5cdf96d..762355f 100644
--- a/lib/proto_info_codec.dart
+++ b/lib/proto_info_codec.dart
@@ -310,5 +310,5 @@
 
   Id(this.kind, this.id);
 
-  String get serializedId => '$kind/$id';
+  String get serializedId => '${kindToString(kind)}/$id';
 }