use lang config instead of hardcode for lang direction

Author: corwintines

src/utils/translations.ts

@@ -1,10 +1,15 @@
 import type { Lang } from "./languages"
 import type { Direction } from "../types"
 
+import i18nConfigs from "../../i18n/config.json"
+
 export type TranslationKey = string
 
 export const isLangRightToLeft = (lang: Lang): boolean => {
-  return lang === "ar" || lang === "fa"
+  const langConfig = i18nConfigs.filter(
+    (language) => language.hrefLang === lang
+  )
+  return langConfig[0].langDir === "rtl"
 }
 
 export const getDirection = (lang?: Lang): Direction => {