deleted template properties are not removed by upgrade process

Description

I have noticed that if you remove a property from the template and do an upgrade they are not removed from the workspace or workspace service properties, do we think they should be, or is there a way to do this? I guess in the cosmosDB

Steps

The steps I have tried are:

1. Deploy a workspace service containing a property such as my_new_property
2. Remove my_new_property from the template
3. Upgrade the workspace service
4. Observe that the property is still present

Code

The code I am using is:

    "my_new_property": {
      "$id": "#/properties/my_new_property",
      "type": "string",
      "title": "my new property",
      "description": "my new property",
      "default": "test property",
      "updateable": true
    }```

Reproduce the issue using the listed workspace service deployment, property removal, and upgrade steps, then trace the upgrade process that handles workspace and workspace service properties. Confirm whether the property is retained in Cosmos DB and define done as an upgrade removing properties deleted from the template.