test(node): Make logs-disabled test deterministically catch leaks

Flush the log buffer before capturing the sentinel error so a leaked log
envelope arrives first and fails the ordered `event` expectation. Previously
the error was sent first and the runner could complete before a stray log
arrived, letting a broken disable path pass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: nicohrubec

dev-packages/node-integration-tests/suites/public-api/logs-disabled/subject.ts

@@ -14,11 +14,14 @@ scope.setClient(client);
 client.init();
 
 async function run(): Promise<void> {
-  // Should be dropped because logs are disabled.
   Sentry.logger.info('this log should not be captured', {}, { scope });
 
-  // Should be delivered — used as a sentinel so the test has a deterministic
-  // envelope to match instead of asserting on the absence of one.
+  // Flush the log buffer before the sentinel is captured. If the disable path is
+  // broken, the leaked log envelope is sent here and arrives before the error,
+  // failing the ordered `event` expectation. If logs are correctly disabled,
+  // the buffer is empty and only the sentinel error is delivered.
+  await client.flush();
+
   scope.captureException(new Error('sentinel_error'));
 
   await client.flush();