refactor backendBuildDate

src/app/ui/navigation/nav-links.tsx

@@ -64,12 +64,13 @@ export default function NavLinks() {
 		data: backendBuildDate,
 	} = useQuery({
 		queryKey: ['backendBuildDate'],
-		queryFn: () => getBuildData(),
-		select: (data) => {
-			if (data) {
-				return data;
+		queryFn: async () => {
+			try {
+				const response = await getBuildData();
+				return response.buildTimeBack ?? null;
+			} catch (error) {
+				return null;
 			}
-			return null;
 		},
 		retry: false
 	});