Missing protection in the spinner creation

[miranov25]

In case the variables for the spinner are not suitable - the error in the creation of the spinner:

Hi Marian, I'm getting this error from RootIneractive: "ValueError: failed to validate Spinner(id='7035', ...).step: expected a value of type Float in range [1e-16, inf], got 0.0"

should be caught and fixed by RootInteactive

[miranov25]

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
------------------------------------------------------------------------------------------------ JSON report -------------------------------------------------------------------------------------------------
report saved to: test6.json
================================================================================= 37 passed, 7 warnings in 137.26s (0:02:17) =================================================================================

real    2m18.979s
user    24m21.480s
sys     1m18.468s