[improvement][chat] The parser interface supports using the dataSetId provided by the frontend as the reference (#1852)

chat/api/src/main/java/com/tencent/supersonic/chat/api/pojo/request/ChatParseReq.java

@@ -16,6 +16,7 @@ public class ChatParseReq {
     private String queryText;
     private Integer chatId;
     private Integer agentId;
+    private Long dataSetId;
     private User user;
     private QueryFilters queryFilters;
     private boolean saveAnswer = true;