fix: [enrichment view] Testing if event metadata elements exist before displaying them
fix: [enrichment view] Testing if event metadata elements exist before displaying them

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