Shadow artefacts appeared in teh Boat Attack project, these seem to originate from the shader Terrain/Lit (Base Pass) shadow caster and certain patches(maybe non-instanced ones) render with the incorrect heightmap, this leads to the shadow map having disparities from the rendered scene causing massive self shadowing and artefacts.

Repo Steps:
1. Clone master branch of Boat Attack repo - https://github.com/Unity-Technologies/BoatAttack
2. Import local version of URP 11
3. Look around the same area that is in the attatched video

Expected Results: The should be no visual artefacts and the shadowmap should render the terrain correctly
Actual Results: The terrain in the shadowmap is broken and causes shadow rendering artefacts

Note: Might only happen on terrain patches that are not part of an instanced group(see image)