fix: unset bypass_slowmode in Permissions.private_channel()

Author: shiftinv

disnake/permissions.py

@@ -542,11 +542,12 @@ def private_channel(cls) -> Self:
         This is equivalent to :meth:`Permissions.text` with :attr:`~Permissions.view_channel` with the following set to False:
 
         - :attr:`~Permissions.send_tts_messages`: You cannot send TTS messages in a DM.
-        - :attr:`~Permissions.manage_messages`: You cannot delete others messages in a DM.
+        - :attr:`~Permissions.manage_messages`: You cannot delete others' messages in a DM.
         - :attr:`~Permissions.manage_threads`: You cannot manage threads in a DM.
         - :attr:`~Permissions.send_messages_in_threads`: You cannot make threads in a DM.
         - :attr:`~Permissions.create_public_threads`: You cannot make public threads in a DM.
         - :attr:`~Permissions.create_private_threads`: You cannot make private threads in a DM.
+        - :attr:`~Permissions.bypass_slowmode`: You cannot enable slowmode in a DM.
 
         .. versionadded:: 2.4
         """
@@ -558,6 +559,7 @@ def private_channel(cls) -> Self:
         base.send_messages_in_threads = False
         base.create_public_threads = False
         base.create_private_threads = False
+        base.bypass_slowmode = False
         return base
 
     @overload