fix ForumChannel.default_sort_order type

the value were actually int instead of SortOrder enum

Author: Readeem

discord/channel.py

@@ -1036,6 +1036,9 @@ def _update(self, guild: Guild, data: ForumChannelPayload) -> None:
             for tag in (data.get("available_tags") or [])
         ]
         self.default_sort_order: SortOrder | None = data.get("default_sort_order", None)
+        if self.default_sort_order is not None:
+            self.default_sort_order = try_enum(SortOrder, self.default_sort_order)
+
         reaction_emoji_ctx: dict = data.get("default_reaction_emoji")
         if reaction_emoji_ctx is not None:
             emoji_name = reaction_emoji_ctx.get("emoji_name")