tools: fix skip of test-internet on forks

Signed-off-by: Antoine du Hamel <duhamelantoine1995@gmail.com>

Author: aduh95

.github/workflows/test-internet.yml

@@ -44,7 +44,7 @@ permissions:
 
 jobs:
   test-internet:
-    if: github.event_name == 'schedule' && github.repository == 'nodejs/node' || github.event.pull_request.draft == false
+    if: (github.event_name == 'schedule' && github.repository == 'nodejs/node') || (github.event.pull_request && github.event.pull_request.draft == false)
     runs-on: ubuntu-24.04-arm
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2