fix: pendulum in SimplePendulum simulation is rotating inverted

[kakarot2905]

📘 Pull Request Template – PhysicsHub

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🔍 Description

Closes #ISSUE_ID (if applicable)

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🎨 Visual Changes (if UI-related)

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📂 Type of Change

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🧩 Additional Notes for Reviewers

[mattqdev]

Thank you so much for this! Can you please send a short video to show how it looks?

[mattqdev]

No problem, I've already check it, no need to the video.
But please always test your changes and add video referecences on your PR.
There is a bug with drag: when you click on it, it goes all the way up and it's disallinated to the drag.

Registrazione.schermo.2026-03-09.alle.21.31.14.mov

[mattqdev]

Also ping the issue numer to the repo description if it close it

[physicshub]

🎉 This PR is included in version 3.25.0 🎉

The release is available on GitHub release

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