Focus the created Spot of AddSpotAndLinkIt behaviour already directly…

… after it has been

* The reasoning behind this change is that the OverlayGraphRenderer would recognize the newly created spot as existing, but yet invisible because the TrackOfFocusedVisibility would tell so, but this is actually not true.

src/main/java/org/mastodon/views/bdv/overlay/EditSpecialBehaviours.java

@@ -475,7 +475,7 @@ public void init( final int x, final int y )
 				// Create new vertex under click location.
 				source.getCovariance( mat );
 				final int timepoint = viewer.state().getCurrentTimepoint();
-				overlayGraph.addVertex( target ).init( timepoint, pos, mat );
+				V vertex = overlayGraph.addVertex( target ).init( timepoint, pos, mat );
 
 				// Link it to source vertex. Careful for oriented edge.
 				if ( forward )
@@ -489,6 +489,8 @@ public void init( final int x, final int y )
 				overlay.paintGhostLink = true;
 				overlay.paintGhostVertex = true;
 				overlayGraph.notifyGraphChanged();
+				if ( FOCUS_EDITED_SPOT )
+					focus.focusVertex( vertex );
 
 				lock.readLock().lock();
 				lock.writeLock().unlock();