fix: correct mobile bottom navigation in RTL language (#1316)

Author: shuuji3

app/pages/package/[[org]]/[name].vue

@@ -645,7 +645,7 @@ onKeyStroke(
             v-if="resolvedVersion"
             as="nav"
             :aria-label="$t('package.navigation')"
-            class="hidden sm:flex max-sm:flex max-sm:fixed max-sm:z-40 max-sm:inset-is-50% max-sm:-translate-x-50% max-sm:bg-[--bg]/90 max-sm:backdrop-blur-md max-sm:border max-sm:border-border max-sm:rounded-md max-sm:shadow-md"
+            class="hidden sm:flex max-sm:flex max-sm:fixed max-sm:z-40 max-sm:inset-is-1/2 max-sm:-translate-x-1/2 max-sm:rtl:translate-x-1/2 max-sm:bg-[--bg]/90 max-sm:backdrop-blur-md max-sm:border max-sm:border-border max-sm:rounded-md max-sm:shadow-md"
             :class="$style.packageNav"
           >
             <LinkBase