typings for _prepare_cursor #2760
Description
to implement a custom django.db.backends.base.base.BaseDatabaseWrapper one may need to super()._prepare_cursor(...) (I'm not sure on the specific types)
mostly making a placeholder to revisit my # type: ignore[misc] for src/sentry/db/postgres/base.py:112: error: "_prepare_cursor" undefined in superclass [misc]