Registrants view doesn't show all registrants for series registration events -- resurfaced issue

Problem/Motivation

Changes to recurring_events_registrations view has caused the event series registrations to not appear correctly again.

For events with Series Registration enabled, going to the "Registrations" page of any event instance should show the list of all registrants for the whole series. Currently, it does not.

I believe this is because of addition of the Event Instance ID as an argument in recurring_events_views_update_8002 -- this argument is present along with the argument wanting to filter by eventseries ID instead of event instance ID for Series Registration events.

Steps to reproduce

Look at the Registrations tab of the different event instances for an event series set to Series Registration. Each tab will have a different list of registrants.

Proposed resolution

I've hacked my code to kick out the event instance argument in these cases. This seems like a bad long-term solution. Perhaps we should review why the event instance ID argument was added to the view recently.