In the 470 package this happens to be a dependency already because libnvidia-vulkan-producer.so links against it.
In the newer versions instead libnvidia-vulkan-producer.so dlopens it so it is no longer automatically pulled in by ${shlibs:Depends}
This will be added to the release, but since it needs to go to oracular, noble, jammy, focal and bionic branches it needs to be split from debian/changelog
While it is technically an optional plugin, it is needed to properly support wayland sessions. https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-535/+bug/2063827 https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-545/+bug/2062082
In the 470 package this happens to be a dependency already because
libnvidia-vulkan-producer.so
links against it. In the newer versions insteadlibnvidia-vulkan-producer.so
dlopens it so it is no longer automatically pulled in by${shlibs:Depends}