fix: remove hash when internal jump address has no hash

src/client/theme-default/composables/langs.ts

@@ -1,4 +1,4 @@
-import { computed } from 'vue'
+import { computed, watch } from 'vue'
 import { ensureStartingSlash } from '../../shared'
 import { useData } from './data'
 import { hashRef } from './hash'
@@ -15,6 +15,10 @@ export function useLangs({
       (localeIndex.value === 'root' ? '/' : `/${localeIndex.value}/`)
   }))
 
+  watch(page, () => {
+    hashRef.value = location.hash ? location.hash : ''
+  })
+
   const localeLinks = computed(() =>
     Object.entries(site.value.locales).flatMap(([key, value]) =>
       removeCurrent && currentLang.value.label === value.label