test(handler): fix broken test case since 165610d

Author: yoshinorin

__tests__/unit/handler.test.ts

@@ -11,7 +11,7 @@ test("should parse response and return data if status is 200", async () => {
 
 test("should throw an error if status is 404", async () => {
   const response = new Response("Not Found", { status: 404 });
-  await expect(parseOrThrow(response)).rejects.toThrowError("NEXT_NOT_FOUND");
+  await expect(parseOrThrow(response)).rejects.toThrowError("NEXT_HTTP_ERROR_FALLBACK;404");
 });
 
 test("should throw an error if status is not 200 or 404", async () => {