Improve Sorting of Events

[hauf-toni]

Is your feature request related to a problem? Please describe.
the current sorting system for events could cause long-term (ongoing) events to appear prominently at the top of the list in the future. This could reduce the visibility of single (one-time) events, which may be less noticeable to users. As a result, users may miss out on important individual events, leading to a less optimal user experience

Describe the solution you'd like
An improved sorting mechanism where single (one-time) events are prioritized and displayed at the top of the feed, followed by long-term (ongoing) events. This adjustment would ensure better visibility for time-specific events, making it easier for users to discover and engage with them

Describe alternatives you've considered
An alternative solution could involve visually differentiating long-term events with distinct labels, making them easier to distinguish. However, this approach might not fully resolve the issue of reduced visibility for single events

Additional context
The implementation is dependent on the backend release of the option to categorize events in single events and ongoing events (📆 #3070)

[steffenkleinle]

An improved sorting mechanism where single (one-time) events are prioritized and displayed at the top of the feed, followed by long-term (ongoing) events. This adjustment would ensure better visibility for time-specific events, making it easier for users to discover and engage with them

@hauf-toni do you mean by this that all single events are shown first? And all long terms are shown below?
Should we add some visual separation and/or explanation why there are two different list (as it won't follow chronological sorting anymore)?