[desktop] Port some QtCommon changes from QML branch (#3703)

- Linker now resolves implementation differences
- Remove unneeded ifdefs
- Better abstractions overall

Signed-off-by: crueter <crueter@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3703
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

src/yuzu/main_window.cpp

@@ -1929,9 +1929,8 @@ bool MainWindow::LoadROM(const QString& filename, Service::AM::FrontendAppletPar
 
     /** firmware check */
 
-    if (!QtCommon::Content::CheckGameFirmware(params.program_id, this)) {
+    if (!QtCommon::Content::CheckGameFirmware(params.program_id))
         return false;
-    }
 
     /** Exec */
     const Core::SystemResultStatus result{