Feat: Add FormDrawer to agent page. #3221 (#5323)

### What problem does this PR solve?

Feat: Add FormDrawer to agent page. #3221

### Type of change


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

web/src/pages/agent/form/relevant-form/index.tsx

@@ -0,0 +1,49 @@
+import LLMSelect from '@/components/llm-select';
+import { useTranslate } from '@/hooks/common-hooks';
+import { Form, Select } from 'antd';
+import { Operator } from '../../constant';
+import { useBuildFormSelectOptions } from '../../form-hooks';
+import { IOperatorForm } from '../../interface';
+import { useWatchConnectionChanges } from './hooks';
+
+const RelevantForm = ({ onValuesChange, form, node }: IOperatorForm) => {
+  const { t } = useTranslate('flow');
+  const buildRelevantOptions = useBuildFormSelectOptions(
+    Operator.Relevant,
+    node?.id,
+  );
+  useWatchConnectionChanges({ nodeId: node?.id, form });
+
+  return (
+    <Form
+      name="basic"
+      labelCol={{ span: 4 }}
+      wrapperCol={{ span: 20 }}
+      onValuesChange={onValuesChange}
+      autoComplete="off"
+      form={form}
+    >
+      <Form.Item
+        name={'llm_id'}
+        label={t('model', { keyPrefix: 'chat' })}
+        tooltip={t('modelTip', { keyPrefix: 'chat' })}
+      >
+        <LLMSelect></LLMSelect>
+      </Form.Item>
+      <Form.Item label={t('yes')} name={'yes'}>
+        <Select
+          allowClear
+          options={buildRelevantOptions([form?.getFieldValue('no')])}
+        />
+      </Form.Item>
+      <Form.Item label={t('no')} name={'no'}>
+        <Select
+          allowClear
+          options={buildRelevantOptions([form?.getFieldValue('yes')])}
+        />
+      </Form.Item>
+    </Form>
+  );
+};
+
+export default RelevantForm;