message: Make new 64-bit flag Bits enums explicitly uint64_t
diff: @@ -1562,11 +1562,11 @@ DECLARE_DESERIALISE_TYPE(VkPresentFrameTokenGGP);
  // we add these fake enums so we have a type for type-dispatch in the serialiser. Due to C ABI rules
  // the vulkan API doesn't define native 64-bit enums itself
  -enum VkAccessFlagBits2KHR
  +enum VkAccessFlagBits2KHR : uint64_t
  {
  };
  -enum VkPipelineStageFlagBits2KHR
  +enum VkPipelineStageFlagBits2KHR : uint64_t
  {
  };
  