This fixes an issue where we would show the welcome screen when opening the terminal panel. The issue could technically occur in any panel, but was only occurred in the terminal panel since we only render some content after the `cx.spawn` inside `new_terminal_pane` completes. This caused the welcome screen to show up for a single frame. This PR fixes this by showing a blank panel instead. Before https://github.com/user-attachments/assets/4b805c42-5dc5-4742-b090-2f62e8839f3e After https://github.com/user-attachments/assets/5da16b73-5999-461d-9057-438714d8d4ee Screenshot from the videos: Before <img width="1164" height="579" alt="image" src="https://github.com/user-attachments/assets/87ba2dff-d7c0-4104-b983-31bdd21cf0f9" /> After <img width="1537" height="803" alt="image" src="https://github.com/user-attachments/assets/359bc413-9794-4565-832d-83548b67cea5" /> - [x] Tests or screenshots needed? - [x] Code Reviewed - [x] Manual QA Release Notes: - Fixed an issue where the welcome screen would show up in the terminal panel if the terminal was slow to load