Feat: The agent operator and message operator can only select string variables as prompt words. #10427 (#11054)

### What problem does this PR solve?

Feat: The agent operator and message operator can only select string
variables as prompt words. #10427
### Type of change


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

web/src/pages/agent/canvas/node/tool-node.tsx

@@ -58,6 +58,7 @@ function InnerToolNode({
             const mcp = x as unknown as IAgentForm['mcp'][number];
             return (
               <ToolCard
+                key={mcp.mcp_id}
                 onClick={handleClick(mcp.mcp_id)}
                 className="cursor-pointer"
                 data-tool={x.mcp_id}
@@ -70,6 +71,7 @@ function InnerToolNode({
           const tool = x as unknown as IAgentForm['tools'][number];
           return (
             <ToolCard
+              key={tool.component_name}
               onClick={handleClick(tool.component_name)}
               className="cursor-pointer"
               data-tool={tool.component_name}