Revert "TEMPORARY: Switch to pull_request trigger for testing"

This reverts commit 8686adb.

Author: rwgk

.github/workflows/restricted-paths-guard.yml

@@ -6,8 +6,7 @@ name: "CI: Restricted Paths Guard"
 on:
   # Run on drafts too so maintainers get early awareness on WIP PRs.
   # Label updates on fork PRs require pull_request_target permissions.
-  # TEMPORARY: Using pull_request for testing; revert to pull_request_target before merge.
-  pull_request:
+  pull_request_target:
     types:
       - opened
       - synchronize

cuda_bindings/pyproject.toml

@@ -1,6 +1,5 @@
 # SPDX-FileCopyrightText: Copyright (c) 2023-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 # SPDX-License-Identifier: LicenseRef-NVIDIA-SOFTWARE-LICENSE
-# XXX DUMMY CHANGE FOR TESTING restricted-paths-guard.yml - REMOVE BEFORE MERGE XXX
 [build-system]
 requires = [
     "setuptools>=80.0.0",