Metahyper sampling extra config

[TarekAbouChakra]

Metahyper is sometimes sampling an extra configuration, causing tests to fail at some occasions:

https://github.com/automl/neps/actions/runs/6894554381/job/18756615811
https://github.com/automl/neps/actions/runs/6213981866/job/16865511613
https://github.com/automl/neps/actions/runs/6059364933/job/16442416911
https://github.com/automl/neps/actions/runs/6963184298/job/18948320054

Difficult to reproduce, cause of problem is still known, example that the problem appears in: https://github.com/automl/neps/blob/master/neps_examples/basic_usage/hyperparameters.py

[eddiebergman]

Pretty sure this was solved in issue #71, closing for now