tu: Do not expose storage image/buffer features for PACK16 formats
requested to merge Danil/mesa:turnip/fix/disable-buf-and-storage-features-for-pack16-formats into main
We don't support storing into them.
Fixes GL CTS tests running through ZINK:
KHR-GL46.packed_pixels.pbo_rectangle.*Though I don't like the growing amount of conditions in tu_physical_device_get_format_properties. Maybe we need a few more dimensions in fd6_format to better represent capabilities?