🐛(frontend) fix versioning conflict

We switching from one version to the other, depending on
the blocks inside, the version editor could
crash due to conflicts between the different versions.
We now reset the previous content
when switching version to avoid these conflicts.

src/frontend/apps/impress/src/features/docs/doc-versioning/api/useDocVersions.tsx

@@ -77,7 +77,6 @@ export function useDocVersionsInfiniteQuery(
     getNextPageParam(lastPage) {
       return lastPage.next_version_id_marker || undefined;
     },
-
     ...queryConfig,
   });
 }

src/frontend/apps/impress/src/features/docs/doc-versioning/components/DocVersionEditor.tsx

@@ -32,13 +32,18 @@ export const DocVersionEditor = ({
   const { replace } = useRouter();
   const [initialContent, setInitialContent] = useState<Y.XmlFragment>();
 
+  // Reset initialContent when versionId changes to avoid conflicts between versions
   useEffect(() => {
-    if (!version?.content) {
+    setInitialContent(undefined);
+  }, [versionId]);
+
+  useEffect(() => {
+    if (!version?.content || isLoading || initialContent) {
       return;
     }
 
     setInitialContent(base64ToBlocknoteXmlFragment(version.content));
-  }, [version?.content]);
+  }, [versionId, version?.content, isLoading, initialContent]);
 
   if (isError && error) {
     if (error.status === 404) {