Feat: Set the description of the agent, which can be null #3221 (#9327)

### What problem does this PR solve?

Feat: Set the description of the agent, which can be null #3221

### Type of change


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

web/src/pages/agent/setting-dialog/setting-form.tsx

@@ -26,8 +26,8 @@ import { useForm } from 'react-hook-form';
 
 const formSchema = z.object({
   title: z.string().min(1, {}),
-  avatar: z.array(z.custom<File>()),
-  description: z.string(),
+  avatar: z.array(z.custom<File>()).optional().nullable(),
+  description: z.string().optional().nullable(),
   permission: z.string(),
 });