refactor(edge-label): prevent junpming

examples/vite-app/src/examples/EdgeRouting/index.tsx

@@ -107,7 +107,7 @@ const edges: Edge[] = [
 
 const defaultEdgeOptions = {
   label: 'Edge Label',
-  type: 'default',
+  type: 'smoothstep',
   markerEnd: {
     type: MarkerType.ArrowClosed,
   },

packages/core/src/components/Edges/EdgeText.tsx

@@ -41,6 +41,7 @@ const EdgeText: FC<PropsWithChildren<EdgeTextProps>> = ({
     <g
       transform={`translate(${x - edgeTextBbox.width / 2} ${y - edgeTextBbox.height / 2})`}
       className={edgeTextClasses}
+      visibility={edgeTextBbox.width ? 'visible' : 'hidden'}
       {...rest}
     >
       {labelShowBg && (