fix: After uploading the file, ask a question. After completing the question and answer, change the answer and the file will not be uploaded again, resulting in the loss of file information (#4269)

Author: shaohuzhang1

ui/src/components/ai-chat/component/answer-content/index.vue

@@ -156,16 +156,17 @@ function showSource(row: any) {
 }
 
 const regenerationChart = (chat: chatType) => {
-  const startNode = props.chatRecord.execution_details?.find(
-    (detail) => detail.type === 'start-node',
-  )
+  const container = props.chatRecord?.upload_meta
+    ? props.chatRecord.upload_meta
+    : props.chatRecord.execution_details?.find((detail) => detail.type === 'start-node')
+
   props.sendMessage(chat.problem_text, {
     re_chat: true,
-    image_list: startNode?.image_list || [],
-    document_list: startNode?.document_list || [],
-    audio_list: startNode?.audio_list || [],
-    video_list: startNode?.video_list || [],
-    other_list: startNode?.other_list || [],
+    image_list: container?.image_list || [],
+    document_list: container?.document_list || [],
+    audio_list: container?.audio_list || [],
+    video_list: container?.video_list || [],
+    other_list: container?.other_list || [],
   })
 }
 const stopChat = (chat: chatType) => {