Collapsable messages should collapse across days

[bytesized]

Is your suggestion related to a problem? Please describe.

When I look in low-traffic channels, all I see is a barrage of name changes. I would like to see the last messages that were sent in the channel instead

Describe the solution you'd like.

I would like all the name changes to collapse into a single line rather than collapsing into one line per day.

Describe alternatives you've considered.

I assume that the only alternative is to scroll up every time I open the channel.

Additional context

Here's an example of what I'm talking about:

[t3chguy]

This was done on purpose at the time but for low traffic rooms it does create a mess, the alternative would result in the event list summary needing to support data separators inside it

[HarHarLinks]

Why would you like to do it?

collapsing these events in rooms like https://matrix.to/#/#matrix-voip:envs.net or announcement channels that see only irregular activity but frequent updates to room state allows to see the conversation instead of just screens full of room state changes

How would you like to achieve it?

A day (localtime) is eligible for day-collapsing if there are only regularly collapsible events in it. Potentially always exclude today from that list.

If there are 2+ subsequent of such days, collapse the date headers, e.g. Tue, Apr 5 2022 and Wed, Apr 6 2022 to the appropriate range Tue, Apr 5 2022 - Wed, Apr 6 2022. Potentially extend the behaviour to be smarter like Tue, Apr 5 - Wed, Apr 6 2022 but I foresee a lot of issues with that regarding localisation, e.g. German could be Di 5. - Mi 6. Apr 2022 in this case while stupider locales such as US can't.