Fix list component to call apiUrl as background task

[bjagg]

The NotificationAction apiUrl attribute holds the internal API call that was meant to be called with fetch rather than a submit from web components. Some actions do require a submit to follow redirects. This is now supported with a new boolean attribute redirect.

• icon: does not present actions
• modal: has already been updated to support this approach
• banner: ???
• list: should adopt the modal approach