Oauth error unhandled in SDK

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Versions

What package version of the SDK are you using. -> 4.10.3
What nodejs version are you using ->10.13.0
What browser version are you using -> Chrome
What os are you using -> Windows

Describe the bug

The first time user sign in will prompt a permission request like this:

When doing single sign on, tokens retrieved in from parent website without passing this permission request will return success from sdk. Which cause error for user's first time sign in(result = 'sent' in client but failed with exception in bot.)

Js code:
https://github.com/microsoft/botbuilder-js/blob/9e3a7377b2d6369b7d2198ba299b8355b7b8007f/libraries/botbuilder/src/botFrameworkAdapter.ts#L1080

To Reproduce

1. Enlist & setup https://github.com/microsoft/BotFramework-WebChat/tree/master/samples/07.advanced-web-chat-apps/e.sso-on-behalf-of-authentication with contoso account
2. Use a new account who never sign in to bot to sign in with SSO directly
3. See the repro.

Expected behavior

Client get "send failed" and fall back to tradition sign-in for first time.

Screenshots

bot's error:

Additional context

Add any other context about the problem here.