Add warning about different version of @next/font and next

Author: Hannes Bornö

packages/next/server/config.ts

@@ -94,7 +94,14 @@ export function setHttpClientAndAgentOptions(config: {
 
 function setFontLoaderDefaults(config: NextConfigComplete) {
   try {
-    require.resolve('@next/font/google')
+    // eslint-disable-next-line import/no-extraneous-dependencies
+    const nextFontVersion = require('@next/font/package.json').version
+    const nextVersion = require('next/package.json').version
+    if (nextFontVersion !== nextVersion) {
+      Log.warn(
+        `Different versions of @next/font (${nextFontVersion}) and next (${nextVersion}) detected. This may lead to unexpected behavior.`
+      )
+    }
 
     const googleFontLoader = {
       loader: '@next/font/google',