fix(web): stable breadcrumb keys without array index

app/web/src/components/pages/BrowseBody.tsx

@@ -110,7 +110,7 @@ function BrowseInner(props: { locale: Locale }) {
                     {t(locale, "browse.root")}
                 </button>
                 {crumbs.map((c, i) => (
-                    <span key={`${c}-${i}`}>
+                    <span key={crumbs.slice(0, i + 1).join("/")}>
                         {" / "}
                         <button type="button" onClick={() => goToCrumb(i)}>
                             {c}