Feat: Render the mcp list on the agent page #3221 (#8829)

### What problem does this PR solve?
Feat: Render the mcp list on the agent page #3221

### Type of change


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

web/src/pages/agent/constant.tsx

@@ -697,6 +697,7 @@ export const initialAgentValues = {
   exception_comment: '',
   exception_goto: '',
   tools: [],
+  mcp: [],
   outputs: {
     structured_output: {
       // topic: {