Pass correct cell/facet index in tabulate_expression

[michalhabera]

See e.g. https://github.com/FEniCS/dolfinx/blob/main/cpp/dolfinx/fem/assemble_matrix_impl.h#L115

[jorgensd]

Should we add a test that covers this?

[michalhabera]

Should we add a test that covers this?

Feel free to, I won't have much time to do it this week.

[jorgensd]

Should we add a test that covers this?

Feel free to, I won't have much time to do it this week.

I don't have an example where this fails, so it makes it hard for me to make a test. If you have an example (for instance that prompted/made you spot this bug), I can refine it.

[michalhabera]

Should we add a test that covers this?

Feel free to, I won't have much time to do it this week.

I don't have an example where this fails, so it makes it hard for me to make a test. If you have an example (for instance that prompted/made you spot this bug), I can refine it.

I don't have it either. I was just playing with Claude and Gemini and they spotted these bugs.