@Perisak1630 : Unfortunately, the quick answer is no. You can get that "auto-signed in" functionality from a Windows machine (physical or virtual) to Office when you have Azure AD Seamless Sign-On enabled. However, you can only do this if you have a managed domain (Active Directory with Azure AD Connect) or a federated domain (Active Directory with ADFS). This does not work and is not supported when using Azure AD DS.
I'd also be interested to learn more about how to get this working. We have an in-progress deployment for a customer and we're unable to get the Office Apps, Chromium Edge or OneDrive to automatically sign in on the Windows 10 WVD session hosts.
The customer has Azure AD Connect without ADFS, and we've followed all the documentation steps to configure SSO. The session hosts are showing as Hybrid Azure AD Joined in the azure portal and I'm quite sure we have on premises devices working correctly before hand (unable to test right now).