Make emoji better on the wire

activities/models/emoji.py

@@ -214,7 +214,7 @@ class Emoji(StatorModel):
         """
         return {
             "id": self.object_uri or f"https://{settings.MAIN_DOMAIN}/emoji/{self.pk}/",
-            "type": "Emoji",
+            "type": "toot:Emoji",
             "name": self.shortcode,
             "icon": {
                 "type": "Image",

activities/models/post.py

@@ -679,7 +679,7 @@ class Post(StatorModel):
                     post.mentions.add(mention_identity)
                 elif tag["type"].lower() == "hashtag":
                     post.hashtags.append(tag["name"].lower().lstrip("#"))
-                elif tag["type"].lower() == "toot:emoji":
+                elif tag["type"].lower() in ["toot:emoji", "emoji"]:
                     emoji = Emoji.by_ap_tag(post.author.domain, tag, create=True)
                     post.emojis.add(emoji)
                 else: