Load the thread list using server-side sorting and pagination

[novocaine]

Your use case

What would you like to do?

The thread list is currently sorted by the time of the last event received in that thread, client-side. Switch to using server support when added by https://github.com/vector-im/element-meta/issues/152 to for the sorting and enable pagination.

Why would you like to do it?

To resolve performance issues associated with not paginating the list in order to be able to do client side sorting.

How would you like to achieve it?

As described in MSC3856. Some level of backwards compatibility need to be considered to fix issues like https://github.com/vector-im/element-web/issues/22641

Have you considered any alternatives?

No response

Additional context

No response