This PR adds an error toast that will be displayed when installing a dev
extension fails.
Here's what it looks like:
<img width="1310" alt="Screenshot 2025-01-09 at 11 56 42 AM"
src="https://github.com/user-attachments/assets/b65eb9f9-c559-4b99-b64a-ee301fa9e443"
/>
<img width="1310" alt="Screenshot 2025-01-09 at 12 10 30 PM"
src="https://github.com/user-attachments/assets/f4880221-2ed9-4bb0-9d48-1cb29c2b483f"
/>
I did have to touch the workspace `ErrorMessagePrompt` component to make
it scroll for long messages. I don't anticipate this being a problem for
other classes of errors (if anything, I suspect other long errors will
become more usable now).
Closes#21237.
Release Notes:
- Added an error toast that is shown when a dev extension fails to
install.