reducing tolerance from 5 to 4 to ahve enough space to select choices (#2021)

#resolves #2008

plugins/org.yakindu.sct.ui.editor/src/org/yakindu/sct/ui/editor/editor/figures/TransitionFigure.java

@@ -26,7 +26,7 @@ public class TransitionFigure extends PolylineConnectionEx {
 
 	private final IMapMode mapMode;
 
-	protected static final int TOLERANCE = 5;
+	protected static final int TOLERANCE = 4;
 
 	public TransitionFigure(IMapMode mapMode) {
 		this(mapMode, false);