vulkan/wsi/wayland: Fix destruction of event queue with proxies still attached.

Destroy the surface dmabuf feedback proxy before destroying the event queue that the proxy is attached to.

This silences a warning that libwayland 1.22 emits for programs that use Vulkan/Wayland:

warning: queue 0x557a4efbcf70 destroyed while proxies still attached: zwp_linux_dmabuf_feedback_v1@18 still attached

Signed-off-by: Alexandros Frantzis alexandros.frantzis@collabora.com