chore(types): add exports

packages/react/src/index.ts

@@ -109,6 +109,9 @@ export {
   type NodeConnection,
   type OnReconnect,
   type AriaLabelConfig,
+  type SetCenter,
+  type SetViewport,
+  type FitBounds,
 } from '@xyflow/system';
 
 // we need this workaround to prevent a duplicate identifier error

packages/svelte/src/lib/index.ts

@@ -116,7 +116,10 @@ export {
   type ResizeDragEvent,
   type IsValidConnection,
   type NodeConnection,
-  type AriaLabelConfig
+  type AriaLabelConfig,
+  type SetCenter,
+  type SetViewport,
+  type FitBounds
 } from '@xyflow/system';
 
 // system utils