ufl.constantvalue.as_ufl should use the numbers hierarchy

[dham]

ufl.constantvalue.as_ufl checks values against the intrinsic types float, complex, and int. This breaks for other scalar types, for example entries in numpy arrays. The check should instead be for numbers.Real, numbers.Complex, and numbers.Integral respectively.

https://github.com/FEniCS/ufl/blob/e1e8e5627b0c7db17687bdb32857820ac4ddc072/ufl/constantvalue.py#L488C1-L500C1

[dham]

Obviously any PR will need tests.