docs/test: align scheduling cleanup

tests/scheduling/test_ownership.py

@@ -51,6 +51,7 @@ def test_competing_process_cannot_acquire_while_held(tmp_path: Path) -> None:
             capture_output=True,
             text=True,
             timeout=30,
+            cwd=Path(__file__).resolve().parents[2],
         )
         assert proc.returncode == 0, proc.stderr
         assert "second-owner-rejected" in proc.stdout
@@ -73,6 +74,7 @@ def test_lock_released_on_process_death(tmp_path: Path) -> None:
     )
     proc = subprocess.Popen(
         [sys.executable, str(script_path)],
+        cwd=Path(__file__).resolve().parents[2],
         stdout=subprocess.PIPE,
         text=True,
     )