[Development] Raise a better exception when remeshing fails

[sblauth]

At the moment, when someone uses remeshing and uses one mesh in their scripts but specify another one in the config file, remeshing fails with an error like: IndexError: index 23110 is out of bounds for axis 0 with size 23110.

Suggestion: Check the number of vertices and cells to verify that the meshes could be compatible for remeshing. Raise a more obvious exception then.

Question: Would it even be possible to verify that the meshes are identical? Because same number of vertices and cells does not guaranteee that the meshes are identical.