Feat: Add Email and DuckDuckGo and Wikipedia Operator #3221 (#9090)

### What problem does this PR solve?

Feat: Add Email and DuckDuckGo and Wikipedia Operator #3221

### Type of change


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

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

@@ -41,7 +41,6 @@ import { RagNode } from './node';
 import { AgentNode } from './node/agent-node';
 import { BeginNode } from './node/begin-node';
 import { CategorizeNode } from './node/categorize-node';
-import { EmailNode } from './node/email-node';
 import { GenerateNode } from './node/generate-node';
 import { InvokeNode } from './node/invoke-node';
 import { IterationNode, IterationStartNode } from './node/iteration-node';
@@ -71,7 +70,7 @@ export const nodeTypes: NodeTypes = {
   keywordNode: KeywordNode,
   invokeNode: InvokeNode,
   templateNode: TemplateNode,
-  emailNode: EmailNode,
+  // emailNode: EmailNode,
   group: IterationNode,
   iterationStartNode: IterationStartNode,
   agentNode: AgentNode,

web/src/pages/agent/canvas/node/dropdown/next-step-dropdown.tsx

@@ -104,6 +104,9 @@ function AccordionOperators() {
               Operator.ExeSQL,
               Operator.Google,
               Operator.YahooFinance,
+              Operator.Email,
+              Operator.DuckDuckGo,
+              Operator.Wikipedia,
             ]}
           ></OperatorItemList>
         </AccordionContent>