[next] UserBox with respect to auth settings (#2079)

* feat: adapt userbox according to settings in embed stream

* fix: lint and test

* feat: respect allowRegistration

src/core/client/auth/local/local.graphql

@@ -6,6 +6,10 @@ enum View {
 }
 
 type Local {
+  authToken: String
+  authExp: Int
+  authJTI: String
+  loggedIn: Boolean!
   view: View!
 }