If an error is thrown inside a Remix project, we should show the canvas runtime error screen

[balazsbajorics]

today, if there is a runtime error in a component inside a Remix project, we let Remix's error handling step in and show the user-written remix error boundary. this makes it very hard for the user to debug and fix their runtime error.

fix: we should disable / defeat Remix's builtin error boundaries when we render a remix project on the canvas. if utopia must be used for designing the error screens, maybe we can make this a behavior that can be configured by the user.