config: add model_type/architectures for transformers.js

config.json

@@ -169,5 +169,9 @@
     "↘": 173,
     "ᵻ": 177,
     "ɭ": 144
-  }
+  },
+  "model_type": "style_text_to_speech_2",
+  "architectures": [
+    "StyleTextToSpeech2Model"
+  ]
 }