fix: analytics.js using old i18n impl (#5132)

* fix i18n

* fix: lint

apps/frontend/src/utils/analytics.js

@@ -1,3 +1,4 @@
+import { injectI18n } from '@modrinth/ui'
 import dayjs from 'dayjs'
 import { computed, ref, watch } from 'vue'
 
@@ -7,8 +8,7 @@ import { computed, ref, watch } from 'vue'
 const { unix } = dayjs
 
 export function useCountryNames(style = 'long') {
-	const { $i18n } = useNuxtApp()
-	const locale = $i18n.locale
+	const { locale } = injectI18n()
 	const displayNames = computed(
 		() => new Intl.DisplayNames([locale.value], { type: 'region', style }),
 	)