What kind of feature are you missing? Where do you notice a shortcoming of PTB?

Hello,

I'm developing a bot based on python-telegram-bot which leverages topics (threads) in group chats. In particular I would like to use ConversationHandler to interact with a bot independently per message thread. But it looks that ConversationHandler supports per_user and per_chat modes.

Currently it's possible to start conversation in one topic and continue in another.

Describe the solution you'd like

Additional property for ConversationHandler to support chat topics

Describe alternatives you've considered

There is also per_message mode available for ConversationHandler, but using it with the following code:

        app.add_handler(ConversationHandler(
            entry_points=[CommandHandler('edit', self.edit_command)],
            states={
                self.EDIT: [
                    MessageHandler(filters.TEXT & ~filters.COMMAND, self.edit_command_done)],
            },
            fallbacks=[CommandHandler('cancel', self.cancel_command)],
            per_message=True,
        ))

makes ConversationHandler not working and cresults in a warning:

PTBUserWarning: If 'per_message=True', all entry points, state handlers, and fallbacks must be 'CallbackQueryHandler', since no other handlers have a message context. Read this FAQ entry to learn more about the per_* settings: https://github.com/python-telegram-bot/python-telegram-bot/wiki/Frequently-Asked-Questions#what-do-the-per_-settings-in-conversationhandler-do.
  app.add_handler(ConversationHandler(

Additional context

No response