fix(xo-server#moveVdi): moveVdi should always return a VDI (#5073)
fix(xo-server#moveVdi): moveVdi should always return a VDI (#5073)

Fixes #5072
lmcro/xo-web,lmcro/xo-web,lmcro/xo-web,vatesfr/xo-web,vatesfr/xo-web