Fix Python 3.10 __or__ not working with transformers

Fixes #8214

discord/app_commands/errors.py

@@ -24,7 +24,7 @@ DEALINGS IN THE SOFTWARE.
 
 from __future__ import annotations
 
-from typing import Any, TYPE_CHECKING, List, Optional, Type, Union
+from typing import Any, TYPE_CHECKING, List, Optional, Union
 
 
 from ..enums import AppCommandOptionType, AppCommandType

discord/app_commands/transformers.py

@@ -202,6 +202,9 @@ class Transformer:
     def __call__(self) -> None:
         pass
 
+    def __or__(self, rhs: Any) -> Any:
+        return Union[self, rhs]  # type: ignore
+
     @property
     def type(self) -> AppCommandOptionType:
         """:class:`~discord.AppCommandOptionType`: The option type associated with this transformer.

discord/ext/commands/hybrid.py

@@ -142,7 +142,7 @@ class ConverterTransformer(app_commands.Transformer):
                 else:
                     return await converter().convert(ctx, value)  # type: ignore
             elif isinstance(converter, Converter):
-                return await converter.convert(ctx, value)  # type: ignore
+                return await converter.convert(ctx, value)
         except CommandError:
             raise
         except Exception as exc: