Cannot access XB after moving code component to global region

Overview

When editing a code component, moving the component to the global region and then attempting to access its content results in a 404 error.

Steps to reproduce:

1. Create a code component, e.g., myCode.
2. Add myCode to the canvas.
3. In the Layers panel, click on the three dots next to myCode and select Edit Code.
4. Again, click on the three dots and select Move to global region.
5. After that, click on Content.

Upon this action, the following error is displayed:

An unexpected error has occurred in a route.
404 Not Found

{
    "status": 404,
    "statusText": "Not Found",
    "internal": true,
    "data": "Error: No route matches URL \"/xb/xb_page/1/code-editor\"",
    "error": {}
}

Proposed resolution

User interface changes