Prevent a browser history loop in volume acts

When browsing acts for a volume, if the volume has at least one act, the user will be sent to /volume/<uuid>/acts ; but to allow users to share a specific act via the URL, the user is redirected to /volume/<uuid>/acts?act=<uuid>. When going back, the user would go back to /volume/<uuid>/acts, causing another redirection, getting the user stuck on this page.