fix: [event:fetchEvent] Block viewing Objects/Attributes if the user does not belong to the sharing_group
fix: [event:fetchEvent] Block viewing Objects/Attributes if the user
does not belong to the sharing_group

Even if these elements belong to the user. Similar explanation than for 7cd2175

MISP/MISP,SteveClement/MISP,MISP/MISP,MISP/MISP,SteveClement/MISP,SteveClement/MISP,SteveClement/MISP,MISP/MISP,SteveClement/MISP,MISP/MISP