Use local room list sorting from Rust. (#2978)

* Switch to the new local room list sorting API

* Get rid of the RoomSummary enum, replace it by the inner RoomSummaryDetails

* And finally, rename RoomSummaryDetails to RoomSummary

* Fix a bunch of warnings

* Small tidy up post rebase/review.

- Remove unused invalidated property.
- Rename some RoomSummary instances to summary instead of details.
- Fix tests with missing roomListItem's.

* Update snapshots

---------

Co-authored-by: Doug <douglase@element.io>

ElementX/Sources/Mocks/ClientProxyMock.swift

@@ -92,14 +92,7 @@ extension ClientProxyMock {
                 return nil
             }
             
-            let roomID = room.id ?? UUID().uuidString
-        
-            switch room {
-            case .empty:
-                return await RoomProxyMock(.init(name: "Empty room"))
-            case .filled(let details), .invalidated(let details):
-                return await RoomProxyMock(.init(id: roomID, name: details.name))
-            }
+            return await RoomProxyMock(.init(id: room.id, name: room.name))
         }
     }
 }