Emulator Core: ConversationUpdate should not send when the conversation start, but before the first message

[compulim]

https://github.com/Microsoft/BotFramework-WebChat/issues/869

According to @EricDahlvang.

Using WebChat or directline, the bot's ConversationUpdate is sent when the conversation is created and the user's ConversationUpdate is sent when they first send a message.

We need to minimize the difference between ABS and Emulator Core.

[corinagum]

I'm a little late to the party but I was reading through our related email thread from the new year Hackathon. I gathered:

• Web Chat / Direct Line and Emulator have different behaviors, and both are considered 'acceptable' at this time
• The goal is to update Web Chat and Direct Line to behave like the emulator, with one ConversationUpdate event instead of 2.
• There is a workaround where @compulim wrote a sample that in the meantime helps Web Chat to behave like the Emulator (this is available in v4 of Web Chat but not on the portal)

To me it sounds like this is an issue that should be tracked in Web Chat, and that we want a sanity check meeting before implementation. Does anyone have further insight?