python3Packages.qreactor: update to qt6, enable strictDeps to prevent leaks

  fetchFromGitHub,

  twisted,

  qtpy,

  pyqt5,

  pyqt6,

}:

buildPythonPackage {

    sha256 = "1nb5iwg0nfz86shw28a2kj5pyhd4jvvxhf73fhnfbl8scgnvjv9h";

  };

  strictDeps = true;

  propagatedBuildInputs = [

    twisted

    qtpy

  ];

  nativeCheckInputs = [ pyqt5 ];

  nativeCheckInputs = [ pyqt6 ];

  pythonImportsCheck = [ "qreactor" ];