fix(xo-web/VM resource set): handle unknown resource set (#4872)
fix(xo-web/VM resource set): handle unknown resource set (#4872)

In the VM's advanced tab, there was an "an error has occurred" whenever the user
couldn't access the VM's resource set.
lmcro/xo-web,vatesfr/xo-web,vatesfr/xo-web,lmcro/xo-web,lmcro/xo-web