fix: correctly work with Permissions.NONE when passed into Guild.create_role (#1421)

* fix: correctly work with Permissions.NONE when passed into Guild.create_role

* fix: update permissions arg check in Guild.create to check for missing value explicitly

Author: ShajeshJ

interactions/models/discord/guild.py

@@ -1457,7 +1457,7 @@ async def create_role(
         if name:
             payload["name"] = name
 
-        if permissions:
+        if permissions is not MISSING and permissions is not None:
             payload["permissions"] = str(int(permissions))
 
         if colour := colour or color: