[Regression] Command line --styles (#15432)

[Darkhost1999]

Quick summary

Expected behavior:
Microsoft Windows [Version 10.0.26120.2130]
(c) Microsoft Corporation. All rights reserved.

D:\rpcs3-v0.0.31-16303-b6bfde6d_win64>rpcs3 --styles

D:\rpcs3-v0.0.31-16303-b6bfde6d_win64>
windowsvista
Windows
Fusion

Details

Received behavior:
Microsoft Windows [Version 10.0.26120.2130]
(c) Microsoft Corporation. All rights reserved.

D:\rpcs3-v0.0.31-16306-622894a7_win64>rpcs3 --styles

D:\rpcs3-v0.0.31-16306-622894a7_win64>RPCS3: SYS: RPCS3 v0.0.31-16306-622894a7 Alpha | master
RPCS3: SYS: AMD Ryzen 7 7700X 8-Core Processor | 16 Threads | 31.19 GiB RAM | TSC: 4.500GHz | AVX-512+ | FMA3
RPCS3: SYS: Operating system: Windows, Major: 10, Minor: 0, Build: 26120, Service Pack: none, Compatibility mode: 0
RPCS3: SYS: Current Time: 2024-10-24T07:36:49

Build with regression

RPCS3 v0.0.31-16306-622894a7

Attach two log files

rpcs3-v0.0.31-16303-b6bfde6d_win64.log
rpcs3-v0.0.31-16306-622894a7_win64.log

Attach capture files for visual issues

System configuration

Windows 11 Pro
Gtx 1660 Super
Ryzen 7700x

Other details

I tried the build that implemented this --Styles feature Day 1 and there was no GUI functionality whatsoever. But running rpcs3 in CMD seemed to work. The gui_config attach console didn't seem to matter much either still requiring me to have booted rpcs3 from the console and not from a shortcut with --styles added to the target line.
I also tried --stderr --styles and --stdout --styles with their inverses as well --styles --stdout and --styles --stderr just in case I need to enable standard output or standard error output to see the messages.
This QTStyleFactory feature is currently in regression. Maybe this contributes to some of the --stylesheet issues?