Quick Editor: open with type

The `open` function is used to open the popup. If you have several scopes specified then it opens on a menu. It would be nice to pass a type parameter so that the editor could open on a specific section, but still allow other sections to be accessed.

Start by locating the Quick Editor's `open` function and the popup menu it launches. Trace how multiple scopes are selected, then define how an optional type selects the initial section while leaving the other sections accessible. Done means the editor opens on the requested section without removing access to the rest.

Written by the indexing model from the issue text.