microsoft / teams-ai / 7762003222 / 2 – dotnet

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[JS] feat: Add `enableSso` property to toggle SSO in user auth scenarios (#1232)

## Linked issues

closes: #1194  (issue number)

## Details

Introduced `enableSso` property in the `OAuthSettings` to toggle SSO in
`OAuth` adaptive card, bot and message extension scenarios.

### Change details
The authentication feature is broken down into these 3 scenarios, so I
had to update these individual implementations for the `enableSso`
property to work.

**Bot auth**
* In bot auth, to disable sso you simply have to not include the
`tokenExchangeResource` in the oauth card. The original `OAuthPrompt`
didn't allow that so I had to create the `OAuthBotPrompt` to override
the `beginDialog` method and `sendOauthCard`.


**Message Extension auth**
* In ME auth, to disable sso you simply set the `type` to `auth` instead
of `silentAuth`. I introduced a `isSsoSignIn` method to determine
whether to use auth or not. This is because the card creation happens in
the ME auth base class, which is used for `TeamsSSO` auth as well.

**Adaptive Card auth**
* In adaptive card auth, to disable sso you simply don't include the
`tokenExchangeResource` in the card.

## Attestation Checklist

- [x] My code follows the style guidelines of this project

- I have checked for/fixed spelling, linting, and other errors
- I have commented my code for clarity
- I have made corresponding changes to the documentation (updating the
doc strings in the code is sufficient)
- My changes generate no new warnings
- I have added tests that validates my changes, and provides sufficient
test coverage. I have tested with:
  - Local testing
  - E2E testing in Teams
- New and existing unit tests pass locally with my changes

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Co-authored-by: Corina <14900841+corinagum@users.noreply.github.com>

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