fix: webpack.config and package.json make use of mode=production instead of process.env

Author: frankpagan

package.json

@@ -25,7 +25,7 @@
   },
   "scripts": {
     "start": "npx webpack --config webpack.config.js",
-    "build": "NODE_ENV=production npx webpack --config webpack.config.js",
+    "build": "npx webpack --mode=production --config webpack.config.js",
     "dev": "npx webpack --config webpack.config.js --watch",
     "postinstall": "node -e \"const { execSync } = require('child_process'); try { execSync('coc --version', { stdio: 'ignore' }); } catch (error) { try { execSync('npm install -g @cocreate/cli', { stdio: 'inherit' }); console.log('Installed \"@cocreate/cli\" globally.'); } catch (error) { console.error('Failed to install \"@cocreate/cli\" globally:', error); } }\""
   },