It shouldn't cost too much more to check the correct shape,
provided that it is cached and we use the overall AABB
to collect possible entities to check against.
The issues with the old check code is that it will use two
getEntitiesOfClass calls plus the addition of streams
_and_ the toAabbs() logic on VoxelShape. The new code
caches toAabbs, uses one getEntitiesOfClass call, and
does not use streams. Then compared to 1.12, we are
only performing two additional AABB checks per item.