Feat: Add keyword item to AssistantSetting #4543 (#4603)

### What problem does this PR solve?

Feat: Add keyword item to AssistantSetting #4543

### Type of change


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

web/src/locales/zh-traditional.ts

@@ -504,6 +504,8 @@ export default {
       useKnowledgeGraph: '使用知識圖譜',
       useKnowledgeGraph提示:
         '它將檢索相關實體、關係和社區報告的描述，這將增強多跳和複雜問題的推理。',
+      keyword: '關鍵字分析',
+      keywordTip: `應用LLM分析使用者的問題，提取在相關性計算中需要強調的關鍵字。`,
     },
     setting: {
       profile: '概述',