[#856] Connection failure and streaming issues fixed in different versions – which version supports both?

[ceciliaavila]

Fixes #856

Description

This PR improves the handling of connection acknowledgments for webchat, ensuring that the client remains responsive even when the startConversation method does not return activities.

Detailed Changes

• Added once function to make sure the connection ack only happens once.
• Added a second call for handleAcknowledgementOnce outside the forach loop to acknowledge even when no activities are received from the agent.
• Replaced await 0 with await Promise.resolve() for clarity.

Testing

We tested the changes for both scenarios:

• Agent with the StartConversation topic disabled.

• Agent with the StartConversation topic enabled.