Fix 'reportCallIssues' with pyright

Fixes typeddjango#2033.

Author: mvaled

django-stubs/db/models/enums.pyi

@@ -69,6 +69,6 @@ class _TextChoicesMeta(ChoicesType):
     def values(self) -> list[str]: ...
 
 class TextChoices(Choices, StrEnum, metaclass=_TextChoicesMeta):
-    def __new__(cls, value: str) -> Self: ...
+    def __new__(cls, value: str | tuple[str, str]) -> Self: ...
     @_enum_property
     def value(self) -> str: ...