spirv: switch to uint64 for rayquery internal type

Fixes dEQP-VK.ray_query.advanced.using_wrapper_function.comp.*

An empty struct is causing problems because when passing it as argument the spirv parser will just drop the argument, considering it does not hold any data.

Signed-off-by: Lionel Landwerlin lionel.g.landwerlin@intel.com Fixes: 4c703686 ("spirv: handle ray query intrinsics")