Adding on_check_failure to View class (Pycord-Development#799)

Co-authored-by: Dorukyum <53639936+Dorukyum@users.noreply.github.com>
Co-authored-by: Lala Sabathil <lala@pycord.dev>

discord/ui/view.py

@@ -323,6 +323,8 @@ async def interaction_check(self, interaction: Interaction) -> bool:
 
         The default implementation of this returns ``True``.
 
+        If this returns ``False``, :meth:`on_check_failure` is called.
+
         .. note::
 
             If an exception occurs within the body then the check
@@ -350,6 +352,18 @@ async def on_timeout(self) -> None:
                 self.disable_all_items()
                 await self._message.edit(view=self)
 
+    async def on_check_failure(self, interaction: Interaction) -> None:
+        """|coro|
+        A callback that is called when a :meth:`View.interaction_check` returns ``False``.
+        This can be used to send a response when a check failure occurs.
+
+        Parameters
+        -----------
+        interaction: :class:`~discord.Interaction`
+            The interaction that occurred.
+        """
+        pass
+
     async def on_error(self, error: Exception, item: Item, interaction: Interaction) -> None:
         """|coro|
 
@@ -377,7 +391,7 @@ async def _scheduled_task(self, item: Item, interaction: Interaction):
 
             allow = await self.interaction_check(interaction)
             if not allow:
-                return
+                return await self.on_check_failure(interaction)
 
             await item.callback(interaction)
         except Exception as e: