Error opening Welcome after reloading

[joaomoreno]

1. Make sure the File Explorer is visible
2. Create temporary profile
3. Reload window

🐛 Welcome editor fails to open.

Screen.Recording.2023-06-12.at.12.01.39.mov

cc @sandy081

[bhavyaus]

Due to: #184770.

[luabud]

@cwebster-99 and I also reproduced this when testing out her walkthrough changes: microsoft/vscode-python#21411