fix(gossipsub): fix inconsistent publish to floodsub peers

publish broadcasted to all floodsub peers regardless of their topics

Pull-Request: #5904.

Author: turuslan

protocols/gossipsub/CHANGELOG.md

@@ -18,6 +18,9 @@
 - Fix messages were not forwarded to floodsub peers.
   See [PR 5908](https://github.com/libp2p/rust-libp2p/pull/5908)
 
+- Fix messages were published to all floodsub peers regardless of their topic.
+  See [PR 5904](https://github.com/libp2p/rust-libp2p/pull/5904)
+
 ## 0.48.0
 
 - Allow broadcasting `IDONTWANT` messages when publishing to avoid downloading data that is already available.

protocols/gossipsub/src/behaviour.rs

@@ -717,6 +717,7 @@ where
             // Floodsub peers
             for (peer, connections) in &self.connected_peers {
                 if connections.kind == PeerKind::Floodsub
+                    && connections.topics.contains(&topic_hash)
                     && !self
                         .score_below_threshold(peer, |ts| ts.publish_threshold)
                         .0