[VK] Rework SPIRV Shader Optimization (#238)

The actual SPIRV Shader Optimization option doesn't seem to do anything as long as it isn't vinculed, so let's rework it to make it work

Co-authored-by: Gamer64 <76565986+Gamer64ytb@users.noreply.github.com>
Co-authored-by: echosys <echosys@noreply.localhost>
Reviewed-on: #238

src/yuzu/configuration/shared_translation.cpp

@@ -463,6 +463,7 @@ std::unique_ptr<ComboboxTranslationMap> ComboboxEnumeration(QWidget* parent)
                               PAIR(AppletMode, HLE, tr("Custom frontend")),
                               PAIR(AppletMode, LLE, tr("Real applet")),
                           }});
+
     translations->insert({Settings::EnumMetadata<Settings::SpirvOptimizeMode>::Index(),
                           {
                               PAIR(SpirvOptimizeMode, Never, tr("Never")),