No one will force them to do so just like no one will force Germany to pay the reparations to Poland. These demands although rightful are used mostly as a political tool. While for Ukraine such stance is beneficial because it could lead to changes in laws in various countries and seizing russian assets around the civilized parts of the world that would actually at least partially pay for the destruction, then for Poland it’s a tool to gain leverage over Germany and become even more relevant in Europe. Recently I stumbled upon pretty nice read about the latter.