fixup! fix registration,add filter

app/filters/Filters.py

@@ -23,3 +23,7 @@ class CommandFilter(BaseFilter):
     async def __call__(self, message: Message) -> bool:
         return message.text.startswith(tuple(self.commands.keys()))
 
+
+class IsRegister(BaseFilter):
+    async def __call__(self, message: Message | CallbackQuery, **data: dict[str, Any]) -> bool:
+        return data.get("through_registration") is True