Fixing syntax error with updating is_reflecting

[MicahGale]

Pull Request Checklist for MontePy

Description

This fixes a bug where setting surf.is_reflecting = True would output * 1 PZ 0.0. This was simply fixed by marking the modifier node as never_pad which tells it to not add space after this node.

Fixes #697

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General Checklist

• I have performed a self-review of my own code.
• The code follows the standards outlined in the development documentation.
• I have formatted my code with black version 25.
• I have added tests that prove my fix is effective or that my feature works (if applicable).

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Documentation Checklist

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First-Time Contributor Checklist

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Additional Notes for Reviewers

Ensure that:

• The submitted code is consistent with the merge checklist outlined here.
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• 100% coverage of the patch is achieved, or justification for a variance is given.

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📚 Documentation preview 📚: https://montepy--698.org.readthedocs.build/en/698/

[tjlaboss]

Changes look good. One suggestion for simplicity. Copyright lines might have been overlooked?