fix: изменение локали при переключении языка

.vitepress/theme/index.ts

@@ -1,5 +1,5 @@
-import { h } from 'vue'
-import type { Theme } from 'vitepress'
+import { h, watch } from 'vue'
+import { useData, type Theme } from 'vitepress'
 import DefaultTheme from 'vitepress/theme'
 
 import AMWDocsAsideMeta from './components/AMWDocsAsideMeta.vue'
@@ -53,5 +53,15 @@ export default {
     app.component('app', AMWApp)
     app.component('Video', AMWVideo)
     enhanceAppWithTabs(app)
+  },
+  setup() {
+    const { lang } = useData()
+    watch(
+      lang,
+      (val) => {
+        useI18n.global.locale.value = val
+      },
+      { immediate: true }
+    )
   }
 } satisfies Theme

.vitepress/theme/plugins/i18n.ts

@@ -1,10 +1,10 @@
 import { createApp } from 'vue'
 import { createI18n } from 'vue-i18n'
-import { useData } from 'vitepress'
 
 import { AMWThemeLocales } from '../locales/index'
 
 export const useI18n = createI18n({
+  legacy: false,
   locale: 'ru-RU',
   messages: AMWThemeLocales
 })