Stop showing "Preview unavailable" while loading room preview details on the JoinRoomScreen

ElementX/Sources/Screens/JoinRoomScreen/JoinRoomScreenModels.swift

@@ -22,6 +22,7 @@ enum JoinRoomScreenViewModelAction {
 }
 
 enum JoinRoomScreenInteractionMode {
+    case loading
     case unknown
     case invited
     case join
@@ -34,32 +35,9 @@ struct JoinRoomScreenViewState: BindableState {
     
     var roomDetails: RoomPreviewDetails?
     
-    var mode: JoinRoomScreenInteractionMode {
-        guard let roomDetails else {
-            return .unknown
-        }
-        
-        if roomDetails.isInvited {
-            return .invited
-        }
-        
-        if roomDetails.isPublic {
-            return .join
-        }
-        
-        // Knocking is not supported yet, treat it as .unknown
-        // if roomDetails.canKnock {
-        //     return .knock
-        // }
-        
-        return .unknown
-    }
+    var mode: JoinRoomScreenInteractionMode = .loading
     
     var bindings = JoinRoomScreenViewStateBindings()
-    
-    var title: String {
-        roomDetails?.name ?? L10n.screenJoinRoomTitleNoPreview
-    }
 }
 
 struct JoinRoomScreenViewStateBindings {