Mayor Zohran Mamdani will have to include placeholders in his city budget. William Farrington for NY Post More, more, more: That’s all New York Democrats ever want when it comes to spending other people’s money — and their greed is now holding up both the state and city budgets. On Tuesday, Mayor Zohran Mamdani must release his fiscal plan for the new fiscal year, which begins in just seven weeks. Except he’s barely pretending to have a plan, even after getting a two-week extension , since what he releases will be riddled with gaps, placeholders and question marks that belie any headline total-spending figure (pegged at $127 billion in February, but expect it to be larger now). Mamdani’s excuse for the “numbers to be named later” bull? He says he’s waiting for the state to decide how it’ll fill the $5.4 billion shortfall in his plan — even though it’s beyond obvious that it won’t .…