Currently, the EventFilter whitelists event types for the "All" filter.
This has gotten outdated, which causes the confusing behaviour of the
"All" tab not really showing all events. To make matters worse, by
default no tab at all is selected, which does show all events, so
selecting the "All" tab actually hides some events.
Fix this by:
- Making sure All always includes all activity, by abolishing the
whitelist and just returning all events instead.
- Make the All tab selected by default.
- Add Issue events tab to include the specific events around opening
and closing issues, since there was no specific filter to see them
yet.
Fixes#24826
At the moment we cannot see weather a user left a project due to their
membership expiring of if they themselves opted to leave the project.
This adds a new event type that allows us to make this differentiation.
Note that is not really feasable to go back and reliably fix up the
previous events. As a result the events for previous expire removals
will remain the same however events of this nature going forward will be
correctly represented.
