Id argue that not having food because you didn't receive a needed cash transfer, esspecially when children are affected would definitely constitute "Irreparable harm."
Uh, irreparable harm is just one of several elements of the test for whether a preliminary injunction is warranted while a case is being litigated. It is not, on its own, a bar to government action (otherwise, the death penalty would be illegal without having to make 8th Amendment arguments because it may be debatable whether it is cruel and unusual punishment, but that it is irreparable harm is unmistakable.)
So, no, that's not what this precedent (were it a precedential ruling of law rather than a fact finding by a trial court whose rulings would not be precedential in any case) would mean.