feat: supports multiple retrieval tool under an agent (#12046)

### What problem does this PR solve?

Add support for multiple Retrieval tools under an agent

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/agent/constant/index.tsx

@@ -778,6 +778,7 @@ export const NoDebugOperatorsList = [
   Operator.Splitter,
   Operator.HierarchicalMerger,
   Operator.Extractor,
+  Operator.Tool,
 ];
 
 export const NoCopyOperatorsList = [