Investigate component probabilities for the `ClusterBasedNormalizer`

[fealho]

Problem Description

During the transform, we add 1e-6 to the probability of choosing any component. It is not obvious why that would be the case, so it should be investigated.

Expected behavior

Either remove the following lines or explain why they are there.

RDT/rdt/transformers/numerical.py

Lines 506 to 507 in 5d7f8b7

	component_prob_t = component_probs[i] + 1e-6
	component_prob_t = component_prob_t / component_prob_t.sum()