Add model validation on model_copy to ConfigBaseModel

[cfs-data]

Issue: in many places we use model_copy(update=...) which does not trigger validation routines.

Solution: Override the method in base class so that pydantic models are validated even when using model_copy.

This triggered two exceptions in unit tests:

• An exception for an incorrect extra field assignment of _center in a Mark instance (which has been renamed to center_). This has been fixed by simply renaming the keyword
• An exception from numpy for trying to coerce a tuple to numpy.floating. This has been fixed by making the target datatype explicit: numpy.float64

[github-actions]

Diff Coverage

Diff: origin/main..HEAD, staged and unstaged changes

• packages/scratch-core/src/container_models/base.py (100%)
• packages/scratch-core/src/conversion/preprocess_impression/utils.py (100%)

Summary

• Total: 15 lines
• Missing: 0 lines
• Coverage: 100%

[github-actions]

Package	Line Rate	Branch Rate	Health
.	96%	88%	✔
comparators	100%	100%	✔
computations	100%	100%	✔
container_models	99%	100%	✔
conversion	97%	86%	✔
conversion.export	100%	100%	✔
conversion.filter	92%	83%	✔
conversion.leveling	100%	100%	✔
conversion.leveling.solver	100%	75%	✔
conversion.plots	98%	85%	✔
conversion.preprocess_impression	99%	91%	✔
conversion.preprocess_striation	89%	58%	✔
extractors	98%	75%	✔
mutations	100%	100%	✔
parsers	98%	80%	✔
parsers.patches	89%	60%	✔
preprocessors	95%	75%	✔
processors	100%	100%	✔
renders	98%	50%	✔
utils	91%	75%	✔
Summary	96% (2004 / 2077)	82% (207 / 254)	✔

Minimum allowed line rate is 50%

[Raytesnel]

I think model_copy will not be used after all the upcoming changes of the ImageMutation. but more validations are always welcome :)