swarm-ui: use multiselect for every enum-shaped table filter

frontend/packages/swarm-ui/src/pages/HivesPage.tsx

@@ -91,8 +91,11 @@ const COLUMNS: TableColumn<HiveStatus>[] = [
       );
     },
     sortBy: (h) => FRESHNESS[h.freshness].label,
-    filterValue: (h) => FRESHNESS[h.freshness].label,
-    filterMode: "select",
+    // Multiselect (not the single-value `"select"` mode) so the operator
+    // can filter for e.g. "stale or offline" in one pass rather than one
+    // freshness state at a time.
+    filterValues: (h) => [FRESHNESS[h.freshness].label],
+    filterMode: "multiselect",
   },
 ];