Fix segmentation display and drawing in viewport switching #5459
+105
−75
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Convert Surface segmentation representation to Labelmap when switching from 3D to 2D/volume viewports to ensure visibility and editability.
Segmentations are stored as Surface representations in 3D viewports. Previously, when returning to a 2D or volume viewport, the system attempted to restore the incompatible Surface representation, leading to the segmentation disappearing and brush tools failing. This change ensures the correct Labelmap representation is used for non-3D viewports.
Linear Issue: OHI-2216