@mme Thanks for reaching out.
I have reached out to the team if there are any plans/ETA as of now of supporting this in the near future.
As of now this is the limitation for standard V2 tier that workspaces are not supported as documented here.
Update 4/16 :
I have got an update from the team that Standard v2 might be supported at or after Workspaces is GA.
Unfortunately, right now, there are no timelines for when this would be available in standard v2.
Product team regularly push the updates/new features on azure product, and you can look out for this space for any new upcoming features/changes.
Once the feature is available we will also update our document with more information.