Qt/ImGui: Use macOS keyboard behaviors

Signed-off-by: SternXD <stern@sidestore.io>

pcsx2-qt/QtKeyCodes.cpp

@@ -590,6 +590,12 @@ u32 QtUtils::KeyEventToCode(const QKeyEvent* ev)
 			modifiers &= ~Qt::KeypadModifier;
 		}
 	}
+
+	// Undo Qt's swapping of Control and Command on macOS.
+	if (key == Qt::Key_Control)
+		key = Qt::Key_Meta;
+	else if (key == Qt::Key_Meta)
+		key = Qt::Key_Control;
 #endif
 
 	return static_cast<u32>(key) | (static_cast<u32>(modifiers) & static_cast<u32>(Qt::KeypadModifier));

pcsx2/ImGui/ImGuiManager.cpp

@@ -147,6 +147,10 @@ bool ImGuiManager::Initialize()
 	io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures | ImGuiBackendFlags_HasGamepad;
 	io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard | ImGuiConfigFlags_NavEnableGamepad;
 	io.KeyRepeatDelay = 0.5f;
+#ifdef __APPLE__
+	// For macOS we should use the standard macOS text editing shortcuts
+	io.ConfigMacOSXBehaviors = true;
+#endif
 
 	ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
 	platform_io.Platform_GetClipboardTextFn = [](ImGuiContext* ctx) -> const char* {