fix: [compatibility] reverted IE11 breaking change in misp.js, fixes #3939
fix: [compatibility] reverted IE11 breaking change in misp.js, fixes #3939

FloatingGhost/MISP,FloatingGhost/MISP,MISP/MISP,SteveClement/MISP,FloatingGhost/MISP,FIRSTdotorg/MISP,MISP/MISP,FIRSTdotorg/MISP,SteveClement/MISP,Rafiot/MISP,SteveClement/MISP,Rafiot/MISP,MISP/MISP,FloatingGhost/MISP,FIRSTdotorg/MISP,SteveClement/MISP,Rafiot/MISP,Rafiot/MISP,SteveClement/MISP,FIRSTdotorg/MISP,MISP/MISP,MISP/MISP