refactor(globals): dont use process.env

src/container/ReactFlow/index.tsx

@@ -1,7 +1,7 @@
 import React, { useMemo, CSSProperties, HTMLAttributes, MouseEvent, WheelEvent } from 'react';
 import cc from 'classcat';
 
-const nodeEnv: string = process.env.NODE_ENV as string;
+const nodeEnv: string = __ENV__ as string;
 
 if (nodeEnv !== 'production') {
   const whyDidYouRender = require('@welldone-software/why-did-you-render');