bump edge limit for ingoing nodes to 128 in SimilarHostsFinder

now that nofollow links are filtered, we need to fetch more edges from the webgraph to have good enough accuracy on /explore page

crates/core/src/similar_hosts.rs

@@ -79,7 +79,7 @@ impl<G: WebgraphGranularity> SimilarHostsFinder<G> {
 
         let in_edges = self
             .webgraph
-            .batch_raw_ingoing_edges(&nodes, EdgeLimit::Limit(64))
+            .batch_raw_ingoing_edges(&nodes, EdgeLimit::Limit(128))
             .await
             .unwrap_or_default();