Standardize Teams integration behaviour

The behaviour of Watsonx Assistant differs from Web to the Teams integration, while we would expect it to have the same behaviour (i.e. replicate what we have during preview).
The support case (CS4233476) linked show the issue details, which is summarized as :

In the context of a RAG chatbot:

1. A user enters a valid question, direct it to an assistant action where the assistant says some text to acknowledge and say that we are looking for information in our datasources. Then, it calls another action performing that search with an extension.

2. The action and extension execute and generate the response and send it to the user.

The issue is that using Teams, the acknowledgement message is not sent when the user enters a question, but only after the response has been generated (all messages arrive at the same time, not acknowledgement and a few seconds later the answer). This makes the user unaware of whether the bot has taken his demand or is not responding for some reason.

A workaround is to request a user input after the acknowledgement message, but that do not make sense as we have nothing to ask. Setting the skip_user_input variable has no effect. So there is currently no admissible workaround for this issue.

The current chatbot is used by ~30 people and this is impacting users every session. As the project is going to extend to more user, solving this issue would improve the user experience greatly.