"Name already defined" for PySide6 Property

Bug Report

When using PySide6.QtCore.Property, I get a [no-redef] error on the property setter that says it's already defined. If this is a problem that PySide6 needs to fix I will create a bug report there instead.

To Reproduce

from PySide6 import QtCore, QtWidgets

class MyWidget(QtWidgets.QWidget):
    myNum: int = 0
    
    @QtCore.Property(int)
    def myProperty(self) -> int:
        return self.myNum
    
    @myProperty.setter
    def myProperty(self, value: int) -> None:
        self.myNum = value

Expected Behavior

If you use a python property, it gives no errors. Using QtCore.Property should also give no errors.

Actual Behavior

test.py:10: error: Name "myProperty" already defined on line 6  [no-redef]
Found 1 error in 1 file (checked 1 source file)

Your Environment

• Mypy version used: 1.10.0
• Mypy command-line flags: None
• Mypy configuration options from mypy.ini (and other config files): None
• Python version used: 3.11.9
• PySide6 version used: 6.7.1
  Link to PySide6: https://doc.qt.io/qtforpython-6/

La riproduzione si trova in test.py, dove il getter e il setter di QtCore.Property attivano [no-redef]. Inizia eseguendo mypy su quello snippet e verifica come vengono gestiti i decoratori di proprietà sovrapposti. Il lavoro è completato quando il pattern PySide6 non segnala più questo falso positivo, mentre le normali proprietà Python rimangono inalterate.