Align EoMT-DINOv3 modular classes with base segmentation implementation

## Summary - allow the base EoMT layer and universal segmentation module to work with optional rotary position embeddings - refactor the EoMT-DINOv3 embeddings and segmentation head to reuse the shared EoMT implementation - refresh the DINOv3 configuration docstring formatting to match the updated signature ## Testing - make fixup (fails: interrupted after long repository checks in local environment) ------ https://chatgpt.com/codex/tasks/task_b_68e611e4322483369d783331ee3237b4