[DevTools] Replace deprecated `new-window` with `webContents.setWindowOpenHandler()` (#26559)

## Summary

The electron package was recently upgraded from ^11.1.0 to ^23.1.2
(#26337). However, the WebContents `new-window` event – that is used in
the react-devtools project – was deprecated in
[v12.0.0](https://releases.electronjs.org/release/v12.0.0) and removed
in [v22.2.0](https://releases.electronjs.org/release/v22.2.0). The event
was replaced by `webContents.setWindowOpenHandler()`. This PR replaces
the `new-window` event with `webContents.setWindowOpenHandler()`.

## How did you test this change?

I created a simple electron application with similar functionality:

```
const { app, BrowserWindow, shell } = require('electron')

const createWindow = () => {
  const mainWindow = new BrowserWindow({
    width: 800,
    height: 600
  })

  mainWindow.webContents.setWindowOpenHandler(({ url }) => {
    shell.openExternal(url)
    return { action: 'deny' }
  })

  mainWindow.loadFile('index.html')
}

app.whenReady().then(() => {
  createWindow()
})
```

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Co-authored-by: root <root@DESKTOP-KCGHLB8.localdomain>