Why is Chazal so worried about a person carrying a lulav or Shofar when Rosh Hashana is on Shabbos or a Megilla when Purim is on Shabbos but we aren't worried about people lighting after Shabbos comes in on Erev Chanuka? Sometimes it gets pretty crazy when the last day is Shabbos and you have like 10 people all trying to light before Shkiya...