Invalidate router inside beforeLoad

Hey, I'm using tanstack start. Is there a way to invalidate the router inside beforeLoad? I update a language cookie in beforeLoad (so it triggers on link hover and on click : also I don't know if this is the intended behaviour but when I hover a link, it triggers a first time, when I left click it triggers a second time, and when I release it triggers a third time, I was expecting it to only trigger once after hover, or at most twice after hover and click. Also, in beforeLoad,

preload

preload

is always false). But when I actually click the link, despite the cookie has changed, the loader doesn't fires so the language texts are not updated.

export const Route = createRootRouteWithContext<RouterContext>()({
  head: () => ({
    // ...
  }),
  component: RootComponent,
  beforeLoad: async (args) => {
    if (args.preload) { // always false
      return;
    }
    const pathname = args.location.pathname;
    const language = await getLanguageFromPathname(pathname);
    const cookieLanguage = await getLanguage();

    if (cookieLanguage != language) {
      await updateLanguage({ data: { lng: language } });
    }
  },
  loader: async (args) => {
    const pathname = args.location.pathname;
    const language = await getLanguageFromPathname(pathname);

    const i18n = await args.context.queryClient.ensureQueryData(
      getI18nQuery(language),
    );
    return {
      lng: language,
      i18n,
    };
  },
});

export function RootComponent() {
  return (
    <RootDocument>
      <Outlet />
    </RootDocument>
  );
}

function RootDocument({ children }: Readonly<{ children: ReactNode }>) {
  const data = Route.useLoaderData();
  const { i18n, lng } = data;
  console.log("LANG DATA", i18n);

  return (
    <html lang={lng} className={""}>
      <head>
        <HeadContent />
      </head>
      <body
      >
        <IntlProvider {...i18n}>
          {children}
        </IntlProvider>
      </body>
    </html>
  );
}

export const Route = createRootRouteWithContext<RouterContext>()({
  head: () => ({
    // ...
  }),
  component: RootComponent,
  beforeLoad: async (args) => {
    if (args.preload) { // always false
      return;
    }
    const pathname = args.location.pathname;
    const language = await getLanguageFromPathname(pathname);
    const cookieLanguage = await getLanguage();

    if (cookieLanguage != language) {
      await updateLanguage({ data: { lng: language } });
    }
  },
  loader: async (args) => {
    const pathname = args.location.pathname;
    const language = await getLanguageFromPathname(pathname);

    const i18n = await args.context.queryClient.ensureQueryData(
      getI18nQuery(language),
    );
    return {
      lng: language,
      i18n,
    };
  },
});

export function RootComponent() {
  return (
    <RootDocument>
      <Outlet />
    </RootDocument>
  );
}

function RootDocument({ children }: Readonly<{ children: ReactNode }>) {
  const data = Route.useLoaderData();
  const { i18n, lng } = data;
  console.log("LANG DATA", i18n);

  return (
    <html lang={lng} className={""}>
      <head>
        <HeadContent />
      </head>
      <body
      >
        <IntlProvider {...i18n}>
          {children}
        </IntlProvider>
      </body>
    </html>
  );
}

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