fix: [API] Access event proposals by uuid via shadow_attributes/index/[uuid], fixes #4988
fix: [API] Access event proposals by uuid via shadow_attributes/index/[uuid], fixes #4988

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