🤖 chore: Add production key in .babel.env.

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  - https://github.com/aureooms/rejuvenate/blob/17001e676fa44361155baf8a8e44894908dd6c6d/src/transforms/package.json:ensure-babel-env-production.js
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Author: a-flying-potato

package.json

@@ -116,7 +116,8 @@
           ],
           "babel-preset-power-assert"
         ]
-      }
+      },
+      "production": {}
     }
   }
 }