Update hydration.ts

Author: lxsmnsyc

packages/solid/src/render/hydration.ts

@@ -5,7 +5,7 @@ export type HydrationContext = { id: string; count: number };
 type SharedConfig = {
   context?: HydrationContext;
   resources?: { [key: string]: any };
-  load?: (id: string) => Promise<any> | any | undefined;
+  load?: (id: string) => Promise<any> | any;
   has?: (id: string) => boolean;
   gather?: (key: string) => void;
   registry?: Map<string, Element>;