Fix: Every time you switch the page number of a chunk, the PDF document will be reloaded. #4046 (#4047)

### What problem does this PR solve?

Fix: Every time you switch the page number of a chunk, the PDF document
will be reloaded. #4046

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/hooks/chunk-hooks.ts

@@ -45,9 +45,8 @@ export const useFetchNextChunkList = (): ResponseGetType<{
       debouncedSearchString,
       available,
     ],
-
-    initialData: { data: [], total: 0, documentInfo: {} },
-    // placeholderData: keepPreviousData,
+    placeholderData: (previousData) =>
+      previousData ?? { data: [], total: 0, documentInfo: {} }, // https://github.com/TanStack/query/issues/8183
     gcTime: 0,
     queryFn: async () => {
       const { data } = await kbService.chunk_list({

web/src/pages/add-knowledge/components/knowledge-chunk/components/document-preview/preview.tsx

@@ -32,7 +32,6 @@ const HighlightPopup = ({
 // TODO: merge with DocumentPreviewer
 const Preview = ({ highlights: state, setWidthAndHeight }: IProps) => {
   const url = useGetDocumentUrl();
-  useCatchDocumentError(url);
 
   const ref = useRef<(highlight: IHighlight) => void>(() => {});
   const error = useCatchDocumentError(url);
@@ -119,12 +118,4 @@ const Preview = ({ highlights: state, setWidthAndHeight }: IProps) => {
   );
 };
 
-const compare = (oldProps: IProps, newProps: IProps) => {
-  const arePropsEqual =
-    oldProps.highlights === newProps.highlights ||
-    (oldProps.highlights.length === 0 && newProps.highlights.length === 0);
-
-  return arePropsEqual;
-};
-
 export default memo(Preview);