Revert "chore: only generate og images locally"

This reverts commit 362afdb588.

src/_data/env.js

@@ -1,5 +1,3 @@
 export default async function () {
-  return {
-    production: process.env.ELEVENTY_RUN_MODE === 'build'
-  }
+  return process.env.NODE_ENV
 }