The Vulkan spec says:
"If pColorAttachmentInputIndices is NULL, it is equivalent to setting
each element to its index within the array."
Fix updated dEQP-VK.dynamic_rendering.primary_cmd_buff.local_read.*.
v2: Fix it correctly (Samuel)
Fixes: 03490ec019 ("vulkan/runtime: rework VK_KHR_dynamic_rendering_local_read state tracking")
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29703>