Add azure-virtual-desktop.md

[hikarumurai]

I have added a note regarding devices that have not been able to synchronize with Intune for more than 60 days being hard deleted, as this information was not included in the public documentation.

[prmerger-automator]

@hikarumurai : Thanks for your contribution! The author(s) have been notified to review your proposed change.

[learn-build-service-prod]

Learn Build status updates of commit 1c554ce:

✅ Validation status: passed

File	Status	Preview URL	Details
memdocs/intune/fundamentals/azure-virtual-desktop.md	✅Succeeded

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 69b8fc0:

✅ Validation status: passed

File	Status	Preview URL	Details
memdocs/intune/fundamentals/azure-virtual-desktop.md	✅Succeeded

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

[Smritib17]

@hikarumurai, thank you for your contribution. However, this information is not accurate as confirmed by the Product team and cannot be added to the docs. I'm closing the issue for now.