[ui] Inspector3D: double click on media now sets node as "active"

To be consistent with the Graph Editor behavior, double clicking on a node sets it as the active node of its type. This, for example, enables to switch from one SfM to another from the media list.

meshroom/ui/qml/WorkspaceView.qml

@@ -157,6 +157,7 @@ Item {
                     mediaLibrary: viewer3D.library
                     camera: viewer3D.mainCamera
                     uigraph: reconstruction
+                    onNodeActivated: _reconstruction.setActiveNodeOfType(node)
                 }
             }
         }