fix(infra): disable archiveLogs on gpu-test templates (MinIO not running)

The wait sidecar blocks indefinitely trying to save logs to MinIO which
has no running pods. Disable log archiving on all 3 templates since test
output is captured in Argo's pod logs already.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

infra/k8s/argo/gpu-test-pipeline-template.yaml

@@ -62,8 +62,10 @@ spec:
 
     # ── gpu-warmup: trigger H100 autoscale ──
     # Requests GPU to force autoscaler to provision node, then releases it.
-    # Uses the runtime image (not busybox) for Argo emissary executor compat.
+    # archiveLogs: false — no MinIO dependency for this throwaway step.
     - name: gpu-warmup
+      archiveLocation:
+        archiveLogs: false
       nodeSelector:
         k8s.scaleway.com/pool-name: "{{workflow.parameters.gpu-pool}}"
       tolerations:
@@ -93,6 +95,8 @@ spec:
 
     # ── compile-and-test: compile + run GPU tests in single H100 pod ──
     - name: compile-and-test
+      archiveLocation:
+        archiveLogs: false
       nodeSelector:
         k8s.scaleway.com/pool-name: "{{workflow.parameters.gpu-pool}}"
       tolerations:
@@ -303,6 +307,8 @@ spec:
 
     # ── notify-result: post test outcome to Mattermost (onExit) ──
     - name: notify-result
+      archiveLocation:
+        archiveLogs: false
       nodeSelector:
         k8s.scaleway.com/pool-name: platform
       container: