feat: Show prompt send to LLM for assistant answer #2098 (#2142)

### What problem does this PR solve?

feat: Show prompt send to LLM for assistant answer #2098
### Type of change


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

web/src/components/message-item/prompt-modal.tsx

@@ -0,0 +1,30 @@
+import { IModalProps } from '@/interfaces/common';
+import { IFeedbackRequestBody } from '@/interfaces/request/chat';
+import { Modal, Space } from 'antd';
+import HightLightMarkdown from '../highlight-markdown';
+import SvgIcon from '../svg-icon';
+
+const PromptModal = ({
+  visible,
+  hideModal,
+  prompt,
+}: IModalProps<IFeedbackRequestBody> & { prompt?: string }) => {
+  return (
+    <Modal
+      title={
+        <Space>
+          <SvgIcon name={`prompt`} width={18}></SvgIcon>
+          Prompt
+        </Space>
+      }
+      width={'80%'}
+      open={visible}
+      onCancel={hideModal}
+      footer={null}
+    >
+      <HightLightMarkdown>{prompt}</HightLightMarkdown>
+    </Modal>
+  );
+};
+
+export default PromptModal;