Feat: Add RAGFlowSelect component #3221 (#5228)

### What problem does this PR solve?

Feat: Add RAGFlowSelect component #3221

### Type of change


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

web/src/pages/flow/canvas/node/node-header.tsx

@@ -59,7 +59,7 @@ const NodeHeader = ({
       >
         <OperatorIcon
           name={label as Operator}
-          color={operatorMap[label as Operator].color}
+          color={operatorMap[label as Operator]?.color}
         ></OperatorIcon>
         <span className="truncate text-center font-semibold text-sm">
           {name}