Emitting dicts in Signals does not work with ints as keys

from PySide6.QtCore import Signal, Slot, QObject
from PySide6.QtWidgets import (
    QApplication,
    QPushButton,
    QMainWindow,
    QHBoxLayout,
    QWidget,
)
import sys


class Button(QPushButton):
    signal = Signal(dict, name="signal")

    def __init__(self) -> None:
        super().__init__()
        self.clicked.connect(self.on_clicked)

    @Slot(name="on_clicked")
    def on_clicked(self):
        self.signal.emit({192: "bar"})
        self.signal.emit({"192": "bar"})
        self.signal.emit({"192": "foo", 192: "bar"})


class Receiver(QObject):
    @Slot(dict, name="on_clicked")
    def on_signal(self, data: dict) -> None:
        print(f"Received {data}")


app = QApplication(sys.argv)

window = QMainWindow()
window.setCentralWidget(QWidget())
window.centralWidget().setLayout(QHBoxLayout())
button = Button()
receiver = Receiver()
button.signal.connect(receiver.on_signal)
window.centralWidget().layout().addWidget(button)
window.show()
sys.exit(app.exec())