fix: [sync] pull giving some weird messages when an event is blocked by blacklists
fix: [sync] pull giving some weird messages when an event is blocked by blacklists

- don't warn about failed pulls when the reason is a local blocking of the event.

- future improvements: remove the blocked events during the negotiation phase

FloatingGhost/MISP,Rafiot/MISP,SteveClement/MISP,FloatingGhost/MISP,MISP/MISP,devnull-/MISP,FIRSTdotorg/MISP,devnull-/MISP,FIRSTdotorg/MISP,devnull-/MISP,MISP/MISP,SteveClement/MISP,SteveClement/MISP,MISP/MISP,FIRSTdotorg/MISP,MISP/MISP,FloatingGhost/MISP,Rafiot/MISP,Rafiot/MISP,FloatingGhost/MISP,devnull-/MISP,Rafiot/MISP,SteveClement/MISP,SteveClement/MISP,FIRSTdotorg/MISP,MISP/MISP