feat(ui): Remove is_tombstoned filter from sliding sync.

Simplified sliding sync no longer has the `is_tombstoned` filter. This
patch removes it.

crates/matrix-sdk-ui/src/notification_client.rs

@@ -360,7 +360,6 @@ impl NotificationClient {
             .required_state(required_state.clone())
             .filters(Some(assign!(SyncRequestListFilters::default(), {
                 is_invite: Some(true),
-                is_tombstoned: Some(false),
                 not_room_types: vec!["m.space".to_owned()],
             })))
             .sort(vec!["by_recency".to_owned(), "by_name".to_owned()]);

crates/matrix-sdk-ui/src/room_list_service/mod.rs

@@ -163,7 +163,6 @@ impl RoomListService {
                         // If unset, both invited and joined rooms are returned. If false, no invited rooms are
                         // returned. If true, only invited rooms are returned.
                         is_invite: None,
-                        is_tombstoned: Some(false),
                         not_room_types: vec!["m.space".to_owned()],
                     })))
                     .bump_event_types(&[

crates/matrix-sdk-ui/tests/integration/notification_client.rs

@@ -264,7 +264,6 @@ async fn test_notification_client_sliding_sync() {
                     ],
                     "filters": {
                         "is_invite": true,
-                        "is_tombstoned": false,
                         "not_room_types": ["m.space"],
                     },
                     "sort": ["by_recency", "by_name"],

crates/matrix-sdk-ui/tests/integration/room_list_service.rs

@@ -331,7 +331,6 @@ async fn test_sync_all_states() -> Result<(), Error> {
                     ],
                     "include_heroes": true,
                     "filters": {
-                        "is_tombstoned": false,
                         "not_room_types": ["m.space"],
                     },
                     "bump_event_types": [