Merge #4316

4316: Autobatch the task deletions r=curquiza a=irevoire

# Pull Request

## Related issue
Fix part of https://github.com/meilisearch/meilisearch-support/issues/69
Fix #4315 

## What does this PR do?
- Autobatch the task deletions

Co-authored-by: Tamo <tamo@meilisearch.com>

index-scheduler/src/lib.rs

@@ -2244,10 +2244,7 @@ mod tests {
                 .unwrap();
             index_scheduler.assert_internally_consistent();
         }
-        for _ in 0..2 {
-            handle.advance_one_successful_batch();
-            index_scheduler.assert_internally_consistent();
-        }
+        handle.advance_one_successful_batch();
 
         snapshot!(snapshot_index_scheduler(&index_scheduler), name: "task_deletion_processed");
     }