Apply TSNE n_iter -> max_iter renaming

[Alexsandruss]

Description

Apply renaming of n_iter TSNE parameter to max_iter.

sklearn supported both names from 1.5 to 1.6 version and removed the original one in 1.7.

https://scikit-learn.org/stable/modules/generated/sklearn.manifold.TSNE.html

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Checklist:

Completeness and readability

• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation to reflect the changes or created a separate PR with updates and provided its number in the description, if necessary.
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• I have resolved any merge conflicts that might occur with the base branch.

Testing

• I have run it locally and tested the changes extensively.
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• I have extended testing suite if new functionality was introduced in this PR.