Fix exception handling in global PySimpleGUI settings

[doenicke]

This bug was already repored by @dimmv2 in #69 but not fixed.

Reproduce: run fsgsettings

Traceback (most recent call last):
File "", line 198, in run_module_as_main
File "", line 88, in run_code
File "....venv\Scripts\fsgsettings.exe_main.py", line 10, in
sys.exit(main_global_pysimplegui_settings())
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "...\FreeSimpleGUI_init.py", line 15506, in main_global_pysimplegui_settings
pysimplegui_user_settings.set('-upgrade show only critical-', values['-UPGRADE SHOW ONLY CRITICAL-'])
~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
KeyError: '-UPGRADE SHOW ONLY CRITICAL-'

--
PySimpleGUI long version = 5.1.0
PySimpleGUI Version 5.1.0
tcl ver = 8.6 tkinter version = 8.6
Python Version 3.13.5 (main, Jun 12 2025, 12:42:35) [MSC v.1943 64 bit (AMD64)]
tcl detailed version = 8.6.12

[dimmv2]

Hi, normally it's already fixed in bug description,maybe not mergey?

[doenicke]

Hi, normally it's already fixed in bug description,maybe not mergey?

Hi @dimmv2 , I could not find any commit and PR for issue #69. I think publishing the code change in the comment is not sufficient.