The crash was caused by attempting to write-back to the original data after it
has been removed (`add_data_block_items_writeback`).
This write-back is already disabled when applying a modifier, however the
corresponding flag was only set when applying modifiers on mesh objects. This
patch fixes this issue with two small changes:
* Rename `MOD_APPLY_TO_BASE_MESH` to `MOD_APPLY_TO_ORIGINAL` to make it more
generic.
* Pass this flag into modifier evaluation for other geometry types besides
meshes in `modifier_apply_obdata`.
Pull Request: https://projects.blender.org/blender/blender/pulls/125761
6b9b958668