Make Emotion demo wait for the user to finish typing (#38)

* emotion demo: wait until the user is finished typing

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Co-authored-by: Luca Invernizzi <invernizzi@google.com>

demos/js/src/components/EmotionDemo.vue

@@ -182,7 +182,7 @@ const runInference = debounce(async () => {
   topKprediction.values.dispose();
   topKprediction.indices.dispose();
   // Debounce this inference so that we only run it after typing has stopped.
-}, 150);
+}, 500);
 
 // When the user types something, trigger the model.
 watch(userText, async () => {