Same here. It seems like on macOS, things are just borked for Godot 4. Fortunately, I was able to solve the problem using a workaround that should fix things until either Google or Godot makes an update:
- In Google Chrome, open chrome://flags
- Search for 'ANGLE'
- Change 'Choose ANGLE graphics backend' to Metal
- Restart Chrome
This should make it so you can try out the game! Please let me know how it works.