test: silently skip the room summary test on CI, if the server doesn't support it

Author: bnjbvr

Diff for: testing/matrix-sdk-integration-testing/src/tests/sliding_sync/room.rs

@@ -1174,7 +1174,19 @@ async fn get_room_preview_with_room_summary(
     public_no_history_room_id: &RoomId,
 ) {
     // Alice has joined the room, so they get the full details.
-    let preview = RoomPreview::from_room_summary(alice, room_id).await.unwrap();
+    let preview = match RoomPreview::from_room_summary(alice, room_id).await {
+        Ok(r) => r,
+        Err(err) => {
+            if let Some(client_api_error) = err.as_client_api_error() {
+                if client_api_error.status_code == 404 {
+                    warn!("Skipping the room summary test, because the server may not support it.");
+                    return;
+                }
+            }
+            panic!("{err}");
+        }
+    };
+
     assert_room_preview(&preview, room_alias);
     assert_eq!(preview.state, Some(RoomState::Joined));