QT window stops being resizable after `window.resize()`

When using QT, calling `window.resize()` makes the window not resizable anymore. Even setting `window.resizable = True` afterwards doesn't fix it.

```python
import webview


def resize():
    window.resize(600, 400)
    window.resizable = True


window = webview.create_window("Hello world", "https://pywebview.flowrl.com/")
webview.start(resize, gui="qt")
```

OS: Windows 11