refactor(svelte/edges): simplify

packages/react/src/components/Edges/index.ts

@@ -1,3 +1,7 @@
+// We distinguish between internal and exported edges
+// The internal edges are used directly like custom edges and always get an id, source and target props
+// If you import an edge from the library, the id is optional and source and target are not used at all
+
 export { SimpleBezierEdge, SimpleBezierEdgeInternal } from './SimpleBezierEdge';
 export { SmoothStepEdge, SmoothStepEdgeInternal } from './SmoothStepEdge';
 export { StepEdge, StepEdgeInternal } from './StepEdge';