Reg->6.2.2: Signal/Method namespace clashing with multiple inheritance

Note: This issue is new with 6.2.2; but that is not available as a selection from the "Affects Version/s" drop down.

New in PySide 6.2.2, there is an issue involving multiple inheritance, where a method from the first super-class is the same as a signal from a second-superclass, the signal is called instead of the method regardless of inheritance order.

Below is a minimum reproducible example

from PySide6 import QtCore

class Q(QtCore.QObject):
    signal = QtCore.Signal()
    
    def method(self):
        print('Q::method')
class M:
    def signal(self):
        print('M::signal')
    def method(self):
        print('M::method')
class C(M, Q):
    def __init__(self):
        Q.__init__(self)
        M.__init__(self)
c = C()
c.method() # okay
c.signal() # problem on PySide6 6.2.2

 
For completeness, a work-around has been identified that works for all our use-cases:

Python 3.8
Qt 6.1.2 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 9.2.1 20191120 (Red Hat 9.2.1-2)) [limited API]
M::method
M::signal

versus

Python 3.8
Qt 6.2.2 (x86_64-little_endian-lp64 shared (dynamic) debug build; by GCC 9.3.0)
M::method
Traceback (most recent call last):
  File "pyside1730.py", line 36, in <module>
    c.signal() # problem on PySide6 6.2.2
TypeError: native Qt signal is not callable