Main window doesn't appear under wayland

### Description


The bug appears as Ubuntu 24.04 users default to wayland, causing users unable to see the main window for angr-management. Only the terminal is present with debug information and jobs completion time.

The problem can be worked around using the command "export QT_QPA_PLATFORM=xcb" in the terminal, and booting angr-management with "QT_QPA_PLATFORM=xcb python start.py". Would be more practical to use in a .bashrc file with this command as to not repeat multiple time for every boot of angr-management.

### Steps to reproduce the bug

Run angr-management in a virtual environment in Ubuntu 24.04 with wayland set as default.

### Environment

_No response_

### Additional context

_No response_