fix(dataset, next-chats): Fix data form data acquisition logic And Optimize the chat settings interface and add language selection (#9629)

### What problem does this PR solve?

fix(dataset): data form data acquisition logic
fix(next-chats): Optimize the chat settings interface and add language
selection

- Replace form.formControl.trigger with form.trigger
- Use form.getValues() instead of form.formState.values
- Add language selection to support multiple languages
- Add default chat settings values
- Add new settings: icon, description, knowledge base ID, etc.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [ ] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):

web/src/pages/next-chats/chat/app-settings/chat-settings.tsx

@@ -35,13 +35,18 @@ export function ChatSettings({ switchSettingVisible }: ChatSettingsProps) {
     shouldUnregister: true,
     defaultValues: {
       name: '',
+      icon: [],
       language: 'English',
+      description: '',
+      kb_ids: [],
       prompt_config: {
         quote: true,
         keyword: false,
         tts: false,
         use_kg: false,
         refine_multiturn: true,
+        system: '',
+        parameters: [],
       },
       top_n: 8,
       vector_similarity_weight: 0.2,