Add required on.workflow_call to checks

Author: gmarkall

.github/workflows/checks.yaml

@@ -1,6 +1,9 @@
 # SPDX-FileCopyrightText: Copyright (c) 2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 # SPDX-License-Identifier: BSD-2-Clause
 
+on:
+  workflow_call:
+
 defaults:
   run:
     shell: bash