fix(imagereslicemapper): be less sensitive for "snapping" to nearest …

[finetjul]

…orthogonal axis

When using the vtkImageResliceMapper in conjunction with the ResliceCursorWidget(RWC), there was a case when the RCW lines were displayed partly being the slice when the slice plane was being snapped to the nearest orthogonal axis.

Context

When rotating the ResliceCursorWidget near an orthogonal axis, the RCW line was being displayed partly in front of the slice and partly behind the slice. This is because the slice was snapped to the nearest orthogonal axis.

Changes

• Documentation and TypeScript definitions were updated to match those changes

PR and Code Checklist

• semantic-release commit messages
• Run npm run reformat to have correctly formatted code

Testing

• This change adds or fixes unit tests
• Tested environment:
  • vtk.js: master
  • OS: Windows 11
  • Browser: Chrome