yuzu-qt: Make has_broken_vulkan only for crashes

Being able to catch and handle a Vulkan exception is not what this is
for.

src/yuzu/check_vulkan.h

@@ -1 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
 bool CheckVulkan();