explicitly eject the cart before a load with reset, preventing a spurious cart-eject IRQ on startup

also fix possible KEY1 issues when using internal BIOS

src/frontend/qt_sdl/ROMManager.cpp

@@ -535,6 +535,7 @@ bool LoadROM(QStringList filepath, bool reset)
     if (reset)
     {
         NDS::SetConsoleType(Config::ConsoleType);
+        NDS::EjectCart();
         NDS::Reset();
     }