Motivation and context

Related: #8859
One of the possible reasons to the issue is Cannot read properties of undefined (reading 'startPoints') error. For some unknown reason handler object inside of svg js event becomes undefined making an error in dragend hander. This leads to not dispatching canvas.dragend event so new object state coords are not saved. When the error occurs, object is visually moved but if we change frame and go back the annotation will be on the previous place.

In this fix, we will use shape as source of start point coordinates

How has this been tested?

Checklist

• I submit my changes into the develop branch
• I have created a changelog fragment
• [ ] I have updated the documentation accordingly
• [ ] I have added tests to cover my changes
• I have linked related issues (see GitHub docs)

License

• I submit my code changes under the same MIT License that covers the project.
  Feel free to contact the maintainers if that's a concern.