Clean up and validate Bony Pelvis dataset data

🎯 Goal / Objective

A clear and concise description of what this task aims to achieve. Why is this task important?

There are some lingering errors in the Bony Pelvis dataset, such as errors in text labels, descriptions, etc.

✅ Tasks to be Completed

A checklist of the specific, actionable steps required to complete this issue. This helps track progress.

• Run the web app alongside the Bony Pelvis slideshow and follow along. Fix any discrepancies between the data displayed in the app and what is in the slideshow.

Acceptance Criteria

A checklist of conditions that must be met for this task to be considered complete. How will we verify that it's done correctly?

• The new feature is implemented as described.
• All related code passes the repository's workflow checks (linting, tests).
• The application runs without errors after the changes are made.
• (If applicable) New automated tests have been added to cover the changes.
• Any related documentation has been updated, including JSDoc comments or docstrings

Additional Context

Add any other context, notes, screenshots, or links that might be helpful for completing this task.

[!IMPORTANT]
Though not a strict prerequisite, it may be easier to complete this task if #374 is completed first.

One example of a problem that needs to be fixed: the "auricular surface" bone part should not have any text labels over it, but it currently shows the labels that should only be overlaid over the "ilium" bone.