Slicer plugin: Keep showing segmentation in 3D when using sam_3d

In 3D Slicer, when sam_3d result was imported it always removed the closed surface representation, therefore if a user wanted to see the segmentation in 3D then after each sam_3d update the user had to go to "Segment Editor" section and click "Show 3D".

This commit makes the MONAILabel module remember the "Show 3D" state when performing a sam_3d update.

plugins/slicer/MONAILabel/MONAILabel.py

@@ -1823,9 +1823,20 @@ def updateSegmentationMask(self, in_file, labels, sliceIndex=None, freeze=None):
                     segmentIds.InsertNextValue(label)
 
                 # faster import (based on selected segmentIds)
+
+                # ImportLabelmapToSegmentationNode overwrites segments, which removes all non-source representations.
+                # We remember if closed surface representation was present and restore it after import.
+                segmentationRepresentationNames = []
+                segmentationNode.GetSegmentation().GetContainedRepresentationNames(segmentationRepresentationNames)
+                hasClosedSurfaceRepresentation = slicer.vtkSegmentationConverter.GetSegmentationClosedSurfaceRepresentationName() in segmentationRepresentationNames
+
                 slicer.modules.segmentations.logic().ImportLabelmapToSegmentationNode(
                     labelmapVolumeNode, segmentationNode, segmentIds
                 )
+
+                if hasClosedSurfaceRepresentation:
+                    segmentationNode.CreateClosedSurfaceRepresentation()
+
                 slicer.mrmlScene.RemoveNode(labelmapVolumeNode)
             else:
                 existingCount = segmentation.GetNumberOfSegments()