fix: pass down process environment to webpack process (#5844)

Author: mukaschultze

lib/services/webpack/webpack-compiler-service.ts

@@ -356,6 +356,7 @@ export class WebpackCompilerService
 		};
 		options.env = {
 			NATIVESCRIPT_WEBPACK_ENV: JSON.stringify(envData),
+			...process.env,
 		};
 		if (this.$hostInfo.isWindows) {
 			Object.assign(options.env, { APPDATA: process.env.appData });