NEW YORK — A notorious “slumlord” outdid himself this year by beating his own record for most open housing violations, earning him the top spot on the city’s Worst Landlord Watchlist for 2023. Daniel Ohebshalom — also known as Daniel Shalom — had a “staggering” 3,293 open violations this year across over 300 apartments in 15 buildings he owns, Public Advocate Jumaane Williams said Wednesday. The “designated head officer” of Ohebshalom’s properties, Johnathan Santana, is the one technically named on the list. But Williams singled out out Ohebshalom by name. That broke the record of of 2,980 ope…