No, it didn't, that’s simply a lie.
It said that the pleadings were sufficient plausible and that conditions present a sufficient risk of irreparable harm to warrant provisional measures against Israel. It didn't say that there is no genocide, and it didn't say that there is a genocide.
The application for provisional measures it ruled on is analogous in the US system to a preliminary injunction, it enables the court to order measures judged necessary to prevent irreparable harm while a case is pending on the merits, and is not a ruling on the merits.
The case continues on the merits, which it would not if the court were already able to determine that no genocide took place. (And it wouldn't, in that case, order provisional measures.)
> and didn't demand a ceasefire or that Israel ends the war
This, OTOH, is true; the ICJ did not include in its provisional measures against Israel a demand for Israel to cease all military operations.