Update doc to include the new attribute that targets calling extensions

[mathioli]

We are adding a new setting called PinnedCallingBarApps that targets the calling extensions. Any apps that are pinned here would be displayed in the UBAR in call window. Admins can use this setting to pin the apps exclusively for calls. This PR updates the doc to add info about this new setting.

[mathioli]

@microsoft-github-policy-service agree company="Microsoft"

[mathioli]

@mathioli please read the following Contributor License Agreement(CLA). If you agree with the CLA, please reply with the following information.

@microsoft-github-policy-service agree [company="{your company}"]

Options:

• (default - no company specified) I have sole ownership of intellectual property rights to my Submissions and I am not making Submissions in the course of work for my employer.

@microsoft-github-policy-service agree

• (when company given) I am making Submissions in the course of work for my employer (or my employer has intellectual property rights in my Submissions by contract or applicable law). I have permission from my employer to make Submissions and enter into this Agreement on behalf of my employer. By signing below, the defined term “You” includes me and my employer.

@microsoft-github-policy-service agree company="Microsoft"

Contributor License Agreement

@microsoft-github-policy-service agree company="Microsoft"

[learn-build-service-prod]

Learn Build status updates of commit 545cadc:

✅ Validation status: passed

File	Status	Preview URL	Details
teams/teams-ps/teams/New-CsTeamsAppSetupPolicy.md	✅Succeeded	View (teams-ps)
teams/teams-ps/teams/Set-CsTeamsAppSetupPolicy.md	✅Succeeded	View (teams-ps)

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[learn-build-service-prod]

Learn Build status updates of commit 791e2f7:

✅ Validation status: passed

File	Status	Preview URL	Details
teams/teams-ps/teams/New-CsTeamsAppSetupPolicy.md	✅Succeeded	View (teams-ps)
teams/teams-ps/teams/Set-CsTeamsAppSetupPolicy.md	✅Succeeded	View (teams-ps)

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel