debug: windows flake (#18135)

Make sure Bazel logs shows every errors so that we can debug flakes +
fix a small flake on Windows by updating the sleep command to a
`Start-Sleep` instead of a PowerShell nested command (otherwise we had
double nesting which is absurdely slow)

codex-rs/app-server/tests/suite/v2/thread_unsubscribe.rs

@@ -130,9 +130,9 @@ async fn thread_unsubscribe_keeps_thread_loaded_until_idle_timeout() -> Result<(
 async fn thread_unsubscribe_during_turn_keeps_turn_running() -> Result<()> {
     #[cfg(target_os = "windows")]
     let shell_command = vec![
-        "powershell".to_string(),
-        "-Command".to_string(),
-        "Start-Sleep -Seconds 1".to_string(),
+        "Start-Sleep".to_string(),
+        "-Seconds".to_string(),
+        "1".to_string(),
     ];
     #[cfg(not(target_os = "windows"))]
     let shell_command = vec!["sleep".to_string(), "1".to_string()];