using voxelManager in SegmentSelectTool to fix Inside mode

[theoc0702]

Context

Currently, it is problematic to use the SegmentSelectTool configured with SelectMode.Inside in integrated environments (like OHIF). When the tool attempts to evaluate the hovered segment, it can fail to read the underlying data appropriately, resulting in the following TypeError regarding getNumberOfComponents:

Changes & Results

• Refactored the data access logic in getSegmentIndexAtWorldPoint (and associated utilities).
• Replaced the failing direct imageData evaluation with voxelManager.imageData, utilities.transformWorldToIndex, and voxelManager.getAtIJK().
• Result: The SelectMode.Inside configuration can now be used safely without throwing data evaluation errors.

Testing

1. Configure a viewer instance to use the SegmentSelectTool with { mode: SegmentSelectTool.SelectMode.Inside }.
2. Hover the mouse cursor over the viewport / image area.
3. Verify that the selection logic evaluates correctly and no TypeError is thrown in the console.

Checklist

PR

• My Pull Request title is descriptive, accurate and follows the
  semantic-release format and guidelines.

Code

• My code has been well-documented (function documentation, inline comments,
  etc.)

Public Documentation Updates

• The documentation page has been updated as necessary for any public API
  additions or removals.

Tested Environment

• "OS: Windows 11 / Ubuntu 22.04"
• "Node version: 18.16.0"
• "Browser: Chrome 123.0.6312.122"