chore: warn memory leak when using nativeWindowOpen with nodeIntegration

lib/browser/api/browser-window.js

@@ -48,6 +48,15 @@ BrowserWindow.prototype._init = function () {
       return
     }
 
+    if (webContents.getLastWebPreferences().nodeIntegration === true) {
+      const message =
+        'Enabling Node.js integration in child windows opened with the ' +
+        '"nativeWindowOpen" option will cause memory leaks, please turn off ' +
+        'the "nodeIntegration" option.\\n' +
+        'See https://github.com/electron/electron/pull/15076 for more.'
+      this.webContents.executeJavaScript(`console.warn('${message}')`)
+    }
+
     let {url, frameName} = urlFrameName
     v8Util.deleteHiddenValue(webContents, 'url-framename')
     const options = {