Surely Russia has no interest in sabotaging the pipelines that give them leverage over Europe. Without the pipelines, the whole "you lift the sanctions, we deliver natural gas" game is gone. Even if unlikely to happen, it would have been an important psychological and political factor over the winter.
Meanwhile European powers don't seem to have an incentive. They would benefit from having Russia as part of their gas supply once the war is over. Sure, having the option not to buy from them is nice, but why force that? Competition lowers prices after all.
Ukraine has a motive to hurt Russia and prevent Russian gas exports, but that would also bite the hand that feeds them weapons. Not to mention they don't have a presence in the Baltic and are occupied on other fronts.
That would leave Europe's non-Russian suppliers of natural gas: Norway and the US.