How to handle SSO in Teams with the new Agents SDK Release?

I am building a conversational chatbot for microsoft teams using the new Agents SDK in python, I built a different bot using the 0.3.2 release of the framework in the past where I would handle user consent and SSO in my messaging endpoint like so:

@AGENT_APP.activity("message")
async def on_message(context: TurnContext, _: TurnState) -> None:
    user_id: str = context.activity.from_property.aad_object_id
    token = None

    typing_indicator = TypingIndicator(interval=800)
    await typing_indicator.start(context)

    if token_cache.does_valid_token_exist(user_id):
        token: Optional[str] = token_cache.get_token(user_id)

    if not token:
        token_response: Optional[TokenResponse] = await AGENT_APP.auth.get_token(
            context, "GRAPH"
        )
        if token_response and token_response.token:
            token: str = token_response.token
            token_cache.add_user_token(user_id, token)
        else:
            async with AGENT_APP.auth.open_flow(context, "GRAPH") as flow:
                flow_response: FlowResponse = await flow.begin_or_continue_flow(
                    context.activity
                )

                if flow_response.sign_in_resource:
                    await context.send_activity(
                        create_oauth_signin_activity(flow_response)
                    )
                    return

    if user_id not in message_cache.cache:
        hist: List[Dict[str, str]] = await get_n_message_history(context, token, 10)
        message_cache.add_history(user_id, hist)

    message_cache.add_new_message(user_id, context.activity.text)

    async with httpx.AsyncClient() as client:
        agent_response: Response = await client.post(
            f"{API_BASE_URL}/v1/agent/messages",
            json={
                "user": context.activity.from_property.name,
                "history": message_cache.get_user_history(user_id),
            },
            timeout=30.0,
        )
        response: Dict = agent_response.json()

    bot_message: Optional[str] = response.get("message")

    if bot_message not in tools:
        message_cache.add_new_message(user_id, bot_message, True)
        await context.send_activity(f"{bot_message}")
        typing_indicator.stop()
    else:
        await context.send_activity(tools.get(bot_message)())
        typing_indicator.stop()

however since then, the open_flow() and access to FlowResponse or really any way to control the oauth flow has been removed according to this Pull Request . Since the framework is almost completely undocumented I would like to know what the new way of doing this is.

PS: even though there are no changes in my code, running the same code on a different bot instance gives me the following error banner when clicking on the oauth card:

This action can't be performed since the app does not exist or has been uninstalled.

I have cross referenced the previous bots config and there are almost no differences I would like to know how to fix this error as well because I noticed that clicking on the signin button on the card makes no network requests to the bot so I need to fix this issue as well.