fix(packages/lazy-fn-vite-plugin): make dynamic function detection stricter (#223)

packages/lazy-fn-vite-plugin/tests/sources/dynamic-only/source.tsx

@@ -0,0 +1,14 @@
+import React, { Suspense, type JSX } from "react";
+import { dynamic } from "tuono";
+
+const DynamicComponent = dynamic(() => import("../components/DynamicComponent"))
+
+const Loading = (): JSX.Element => <>Loading</>
+
+export default function IndexPage(): JSX.Element {
+	return (
+		<Suspense fallback={<Loading />}>
+			<DynamicComponent />
+		</Suspense>
+	);
+}