chore(packages): use @reactflow org for packages

packages/core/src/styles/init.css

@@ -1,4 +1,4 @@
-/* these are the necessary styles for React Flow */
+/* these are the necessary styles for React Flow, they get used by base.css and style.css */
 .react-flow__container {
   position: absolute;
   width: 100%;
@@ -138,6 +138,7 @@
 
   &.connectable {
     pointer-events: all;
+    cursor: crosshair;
   }
 
   &-bottom {

packages/core/src/utils/index.ts

@@ -7,7 +7,7 @@ export const getDimensions = (node: HTMLDivElement): Dimensions => ({
 
 export const clamp = (val: number, min = 0, max = 1): number => Math.min(Math.max(val, min), max);
 
-export const clampPosition = (position: XYPosition, extent: CoordinateExtent) => ({
+export const clampPosition = (position: XYPosition = { x: 0, y: 0 }, extent: CoordinateExtent) => ({
   x: clamp(position.x, extent[0][0], extent[1][0]),
   y: clamp(position.y, extent[0][1], extent[1][1]),
 });