Fix 'Jitter Points' and 'Sample Polylines' working incorrectly with X or Y scale of 0 content

[Keavon]

Fixes #2790.

Also closes #3897 since it's a one-liner.

[cubic-dev-ai]

No issues found across 4 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

[gemini-code-assist]

Code Review

This pull request improves the robustness of vector operations when dealing with singular transforms (zero scale). Key changes include refactoring polyline sampling to compute locations in world space while evaluating them on untransformed paths, and updating the jitter points logic to handle zero-determinant matrices. Feedback suggests refining the matrix repair logic in the jitter points function to better handle collinear vectors, ensuring that scaling along the collapsed axis is not ignored. Additionally, the Monitor and Extract nodes have been moved out of the Debug category.