Memory map dialog Qt overflow error

[cromachina]

Describe the bug
The memory map widget causes an error to get reported in the console.

To Reproduce
Steps to reproduce the behavior:

1. Open the App
2. Attach to any process
3. Open "Memory Map"

Expected behavior
No error is reported in the console.

System (please complete the following information):

• OS: NixOS (Linux)
• Python Version 3.14

Additional context

OverflowError
OverflowError: int too big to convert
OverflowError
Traceback (most recent call last):
  File "/nix/store/i6ldivv97db8sxzx9dy93s9v98fw9q4h-python3.14-PyMemoryEditor-2.0.1/lib/python3.14/site-packages/PyMemoryEditor/app/_auto_refresh_dialog.py", line 116, in _handle_ready
    self._on_data_ready(data)
    ~~~~~~~~~~~~~~~~~~~^^^^^^
  File "/nix/store/i6ldivv97db8sxzx9dy93s9v98fw9q4h-python3.14-PyMemoryEditor-2.0.1/lib/python3.14/site-packages/PyMemoryEditor/app/memory_map_dialog.py", line 355, in _on_data_ready
    self._populate()
    ~~~~~~~~~~~~~~^^
  File "/nix/store/i6ldivv97db8sxzx9dy93s9v98fw9q4h-python3.14-PyMemoryEditor-2.0.1/lib/python3.14/site-packages/PyMemoryEditor/app/memory_map_dialog.py", line 394, in _populate
    addr_item.setData(addr, Qt.UserRole)
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
OverflowError

[cromachina]

The memory map widget also does not seem to be properly cleaned up when exited, as the error continues to spam in the console after it's closed. Because it's doing some automatic refresh, this also prevents a selected list item from being retained as highlighted when clicked on.

[cromachina]

This seems to be some bad error in Pyside6, where you are unable to specify the type for the data attribute. Very high address are being interpreted as integers that are larger than 64 bits, and it wants to coerce the values into signed 64 bit integers, so an overflow occurs.

I have a fix for this where the numeric type is simply stored on the Python NumericItem object instead of being passed to Qt's C++ side.