Fix py3.10 UnionType checks

Author: BobDotCom

discord/enums.py

@@ -650,6 +650,13 @@ def from_datatype(cls, datatype):
             else:
                 raise TypeError("Invalid usage of typing.Union")
 
+        py_3_10_union_type = hasattr(types, "UnionType") and isinstance(datatype, types.UnionType)
+
+        if py_3_10_union_type or getattr(datatype, "__origin__", None) is Union:
+            # Python 3.10+ "|" operator or typing.Union has been used. The __args__ attribute is a tuple of the types.
+            # Type checking fails for this case, so ignore it.
+            return cls.from_datatype(datatype.__args__)  # type: ignore
+
         if datatype.__name__ in ["Member", "User"]:
             return cls.user
         if datatype.__name__ in [
@@ -669,11 +676,6 @@ def from_datatype(cls, datatype):
         if datatype.__name__ == "Mentionable":
             return cls.mentionable
 
-        if isinstance(datatype, types.UnionType) or getattr(datatype, "__origin__", None) is Union:
-            # Python 3.10+ "|" operator or typing.Union has been used. The __args__ attribute is a tuple of the types.
-            # Type checking fails for this case, so ignore it.
-            return cls.from_datatype(datatype.__args__)  # type: ignore
-
         if issubclass(datatype, str):
             return cls.string
         if issubclass(datatype, bool):