fix(rivetkit): allow providing no args to createRivetKit

Author: NathanFlurry

rivetkit-typescript/packages/react/src/mod.ts

@@ -15,7 +15,7 @@ import {
 export { createClient } from "rivetkit/client";
 
 export function createRivetKit<Registry extends AnyActorRegistry>(
-	clientInput: Parameters<typeof createClient>[0],
+	clientInput: Parameters<typeof createClient>[0] = undefined,
 	opts: CreateRivetKitOptions<Registry> = {},
 ) {
 	return createRivetKitWithClient<Registry>(