Enter link editor in edit mode when already editing

[jackfischer]

Current behavior: while editing/inserting an object and click into a link to populate it, you then have to separately enter edit mode on that link

Expected behavior: Clearly you are already editing, so the link editor should be in edit mode already

EdgeDB 4.1+0c628ea (repl 4.0.2+500be79)

    type Organization {}

    type User {
        required link organization: Organization;
    }

[jackfischer]

Related papercut in this situation #229