[core]: Error for missing kwargs in workunits

[kennykos]

Description

Report the workunit name and clarify that translation failed due to a missing keyword argument.

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Refactor / code cleanup
• Other:

Checklist

• Code is formatted with black==25.12.0 (CI will enforce this)
• Tests pass locally with python3 runtests.py
• New or updated unit tests added in the test directory where applicable
• Examples added in examples/pykokkos for large feature changes
• PR title follows the module: feature naming convention

Testing

N/A

Additional Notes

N/A

[IvanGrigorik]

Can you add test / show how it works please?

[kennykos]

Can you add test / show how it works please?

When a keyword argument is missing, the message changes e.g. from
KeyError: 'cutoff'
to
KeyError: "workunit 'direct_reg_stokes3d_near_correction_fp64' missing keyword argument 'cutoff'"

I'm not sure we need a unit test as it just intercepts KeyError and makes the message more helpful, while leaving everything else unchanged.