nlmeans_vulkan green frame

[Jacky Koning]

Summary of the bug: using nlmeans_vulkan replaces the first frame with a green frame and also does not seem to do any nlmeans stuff at all. Playing around with the variables does not change the output in any way. (Tested with other files.)
How to reproduce:
First I created a testsrc file

ffmpeg -f lavfi -i testsrc=duration=10:size=1280x720:rate=30 -c:v av1_nvenc -preset p7 -pix_fmt p010le -cq 20 testsrc.mp4

Then I took the minimum command to get nlmeans_vulkan to work.

ffmpeg -init_hw_device vulkan=vk:0 -filter_hw_device vk -i testsrc.mp4 -vf "hwupload,nlmeans_vulkan,hwdownload,format=yuv420p10le" -y -c:v av1_nvenc -cq 20 nlmeans.mp4

ffmpeg version 2023-05-31-git-baa9fccf8d-full_build-www.gyan.dev

testsrc.mp4 ​https://drive.google.com/file/d/1k9s9nhFvzkjB9tqgNWLjyH3oPqIlD6Vz/view?usp=sharing

nlmeans.mp4 ​https://drive.google.com/file/d/1xgDZlKt2z5Z_W2CdrDTCEDYsGRyMhsHl/view?usp=sharing