QObject.installEventFilter() should prevent gc for the installed object

import sys
from PySide6.QtCore import QObject
from PySide6.QtWidgets import QApplication, QLabel

class Filter(QObject):
    def __del__(self):
        print('del')

    def eventFilter(self, obj, event):
        print(event)
        return False

def create_label():
    label = QLabel('hello')
    filter_ = Filter()
    label.installEventFilter(filter_)
    return label

app = QApplication(sys.argv)
label = create_label()
label.show()
sys.exit(app.exec())