Add visionOS client type

[wyAbhishek]

Description

Teams iOS client runs on VisionOS. Teams iOS client supports web apps built on Teams JS SDK on VisionOS. This PR adds visionOS as a new HostClientType in the Teams JS SDK. This change will enable app developers to find out if app is running on visionOS and write conditional code (if required).

Main changes in the PR:

1. Add visionOS as new case for HostClientType
2. Change all logic which is written for HostClientType.iPadOS. All the logic should apply for HostClientType.visionOS also.

Unit Tests added:

Unit tests are required for all changes. If no unit tests were added as part of this change, please explain why they aren't necessary.

Updated existing tests which included iPadOS. Added visionOS also in list of client type in such tests. Ideally all these tests should pass for visionOS also.

End-to-end tests added:

No

Additional Requirements

Change file added:

Ensure the change file meets the formatting requirements.

Yes

[github-actions]

This pull request contains changes to the runtime.ts file. If you, as the author of this PR, have made changes to the Runtime interface please review RUNTIME.md to determine if a new runtime version is required. Please reply to this comment stating what changes, if any, were made to the runtime object and whether a new runtime version was required.

[maglims]

@wyAbhishek , as talked offline, while we are working on official support(i.e, passing platform type from host to app through hub sdk), another way that developers can do is to check visionOS identifier in the user agent, if they want to get unblocked faster before we complete the chain of support. I am signing off on this PR for now. Tagging @TrevorJoelHarris FYI,

[wyAbhishek]

@wyAbhishek , as talked offline, while we are working on official support(i.e, passing platform type from host to app through hub sdk), another way that developers can do is to check visionOS identifier in the user agent, if they want to get unblocked faster before we complete the chain of support. I am signing off on this PR for now. Tagging @TrevorJoelHarris FYI,

This is not very straightforward as checking user agent. In our test, user agent of iPad and visionOS is similar.
Many people have been using this trick to identify visionOS: https://dev.to/ku6ryo/detecting-visionos-by-javascript-1ei5