fix: cache revalidation logic for language switcher

app/api/web/revalidate/route.ts

@@ -7,6 +7,7 @@ import { Lang } from "@/constants/languages"
 import { env } from "@/env/server"
 import { internalServerError } from "@/server/errors/next"
 import { affix as breadcrumbsAffix } from "@/server/routers/contentstack/breadcrumbs/utils"
+import { languageSwitcherAffix } from "@/server/routers/contentstack/config/utils"
 
 import {
   generateRefsResponseTag,
@@ -67,6 +68,11 @@ export async function POST(request: NextRequest) {
     const refsTag = generateRefsResponseTag(entry.locale, entry.uid)
     const refTag = generateRefTag(entry.locale, content_type.uid, entry.uid)
     const tag = generateTag(entry.locale, entry.uid)
+    const languageSwitcherTag = generateTag(
+      entry.locale,
+      entry.uid,
+      languageSwitcherAffix
+    )
 
     console.info(`Revalidating refsTag: ${refsTag}`)
     revalidateTag(refsTag)
@@ -77,6 +83,9 @@ export async function POST(request: NextRequest) {
     console.info(`Revalidating tag: ${tag}`)
     revalidateTag(tag)
 
+    console.info(`Revalidating language switcher tag: ${languageSwitcherTag}`)
+    revalidateTag(languageSwitcherTag)
+
     if (entry.breadcrumbs) {
       const breadcrumbsRefsTag = generateRefsResponseTag(
         entry.locale,