The Delay Activity type does not work as expected

[EricDahlvang]

#Version latest

Describe the bug

Sending an Activity with Text, then the Delay activity type, then a 2nd text, will result in a delayed 2nd message showing up for the user. However, the Emulator does not show the 1st response until the 2nd text arrives.

To Reproduce

Steps to reproduce the behavior:

1. Create an Echo bot
2. Send an Echo response, a delay of three seconds, then another response
3. Test from emulator: see both responses show up at once
4. Test from webchat, or other channels: see one response, few seconds, 2nd response

Expected behavior

Emulator should show one response, few seconds, then 2nd response: similar to other channels.

reference: https://github.com/microsoft/botbuilder-dotnet/issues/4509#issuecomment-711431764

[bug]

[EricDahlvang]

another reference:

https://github.com/microsoft/BotFramework-Emulator/issues/2206