Prune blobs in bg after canonical head update

beacon_node/beacon_chain/src/canonical_head.rs

@@ -793,6 +793,19 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
             .execution_status
             .is_optimistic_or_invalid();
 
+        if self.store.get_config().prune_blobs {
+            let store = self.store.clone();
+            let log = self.log.clone();
+            self.task_executor.spawn_blocking(
+                move || {
+                    if let Err(e) = store.try_prune_blobs(false) {
+                        error!(log, "Error pruning blobs in background"; "error" => ?e);
+                    }
+                },
+                "prune_blobs_background",
+            );
+        }
+
         // Detect and potentially report any re-orgs.
         let reorg_distance = detect_reorg(
             &old_snapshot.beacon_state,