fix webhook timing

Author: t0mmylam

k8s-tests/chainsaw/helm/helm-webhook-test/chainsaw-test.yaml

@@ -33,6 +33,23 @@ spec:
           ../install-helm-chart.sh webhooks
     - assert:
         file: assert-scheduled.yaml
+    - script:
+        content: |
+          ## Wait for webhook to be ready (K8s 1.34 needs extra time)
+          echo "Waiting for webhook to be callable..."
+          i=1
+          while [ $i -le 60 ]; do
+            if kubectl apply -f invalid-skyhook.yaml 2>&1 | grep -q "admission webhook"; then
+              echo "✓ Webhook is ready"
+              break
+            fi
+            if [ $i -eq 60 ]; then
+              echo "ERROR: Webhook did not become ready in 60 seconds"
+              exit 1
+            fi
+            sleep 1
+            i=$((i + 1))
+          done
     - script:
         content: |
           ## Create invalid skyhook