test: Fix flaky errorsInSession test

Author: mydea

packages/integration-tests/suites/replay/errors/errorsInSession/test.ts

@@ -76,6 +76,7 @@ sentryTest(
       sentryTest.skip();
     }
 
+    const reqPromise0 = waitForReplayRequest(page, 0);
     const reqPromise1 = waitForReplayRequest(page, 1);
 
     await page.route('https://dsn.ingest.sentry.io/**/*', route => {
@@ -90,6 +91,7 @@ sentryTest(
 
     await page.goto(url);
     await page.click('#go-background');
+    await reqPromise0;
 
     await page.click('#drop');
     await page.click('#go-background');