SpriteShape gizmo remains offset from the actual bounds of the shape

Steps to reproduce:
1. Open any Unity project
2. Ensure that the 2D SpriteShape package is installed
3. Create a new sprite shape (GameObject>2D Object>Sprite Shape>Open Shape)
4. Click Edit Spline in the Inspector
5. Move all the points of the shape away from its origin
6. Observe the purple gizmo

Expected result: the gizmo would be drawn where the center of the bounding rectangle is
Actual result: the gizmo always remains in the same place.

Reproducible with: 2020.3.43f1, 2021.3.15f1, 2022.2.11f1, 2023.1.0b8, 2023.2.0a6

Note: 2020.3 differs from the rest in that it centers the active tool pivot on the gizmo. Newer versions will center on the bounds, but the gizmo remains incorrectly offset.