Use an unstable algorithm for grenad::Sorter when possible

milli/src/update/index_documents/mod.rs

@@ -1489,6 +1489,7 @@ mod tests {
         assert_eq!(count, 4);
     }
 
+    #[cfg(feature = "default")]
     #[test]
     fn test_meilisearch_1714() {
         let index = TempIndex::new();