fix(server/utils): add isIdNan helper function

lib/server/middlewareButNotReally/isIdNan.ts

@@ -0,0 +1,12 @@
+import { EventHandlerRequest, H3Event } from "h3";
+
+export default function (ev: H3Event<EventHandlerRequest>) {
+	const id = parseInt(getRouterParam(ev, "id")!);
+	if (Number.isNaN(id)) {
+		throw createError({
+			statusCode: 400,
+			message: "Invalid id provided.",
+		});
+	}
+	return id;
+}