fix: Reuse coordinator

Author: manzt

lib/demo.ts

@@ -128,10 +128,7 @@ if (import.meta.hot) {
 	// @ts-expect-error - HMR types not working with Deno
 	import.meta.hot.accept("./clients/DataTable.ts", async ({ datatable }) => {
 		coordinator.disconnect(dt);
-		dt = await datatable("df", {
-			coordinator: dt.coordinator,
-			height: 500,
-		});
+		dt = await datatable("df", { coordinator, height: 500 });
 		table.replaceChildren();
 		table.appendChild(dt.node());
 	});