DOC: “Group MicroTexture Regions” filter still listed in docs but missing in DREAM3D-NX

### Is there an existing issue for this?

- [x] I have searched the existing issues, known issues in release notes, and documentation.

### Brief Description of the Documentation Issue or Improvement

The official DREAM.3D documentation still lists the filter “Group MicroTexture Regions” under Reconstruction Filters, but it is not present in either DREAM3D-NX (v7.4.0) or the older DREAM3D 6.5.171 version. Old pipelines that contain this filter show it as “Unknown Filter” when opened in NX. It’s unclear whether this filter was renamed or not yet ported to NX. Could you please confirm the current status or the recommended replacement?

### Version

7.0.x (DREAM3DNX beta)

### What section did you encounter the discrepancy in? [Further details may be required during triage process]

Filter Documentation

### Anything else?

_No response_

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct