VLC VA-API acceleration broken in snap packages 3.0.16 for Ubuntu

Hi,

With VLC 3.0.16 installed from snap, hardware acceleration with vdpau is not working :

VLC media player 3.0.16 Vetinari (revision 3.0.16-0-g5e70837d8d)
Failed to open VDPAU backend libvdpau_va_gl.so: cannot open shared object file: No such file or directory

Using VLC installed from apt /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_va_gl.so is properly used by VLC and error disappears :

VLC media player 3.0.9.2 Vetinari (revision 3.0.9.2-0-gd4c1aefe4d)
libva info: VA-API version 1.7.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
libva info: Found init function __vaDriverInit_1_7
libva info: va_openDriver() returns 0
libva info: VA-API version 1.7.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
libva info: Found init function __vaDriverInit_1_7
libva info: va_openDriver() returns 0
[00007f1fc8c19e70] avcodec decoder: Using OpenGL/VAAPI backend for VDPAU for hardware decoding

Thanks for your support !

PS : it seems that this issue exists for some time now because I already found it referenced on snapcraft