hosted projects (#8627)

- **Allow joining a hosted project**

You can't yet do anything in a hosted project, but you can join it and
look how empty it is.

Release Notes:

- N/A

crates/workspace/src/pane_group.rs

@@ -268,7 +268,7 @@ impl Member {
                                         this.cursor_pointer().on_mouse_down(
                                             MouseButton::Left,
                                             cx.listener(move |this, _, cx| {
-                                                crate::join_remote_project(
+                                                crate::join_in_room_project(
                                                     leader_project_id,
                                                     leader_user_id,
                                                     this.app_state().clone(),