fix(spark): use Recreate strategy to avoid RWO PVC deadlock

Rolling update deadlocked: new pod couldn't attach the RWO checkpoint
PVC while the old pod still held it, so ContainerCreating stalled for
39+ minutes. Recreate terminates the old pod first.

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

spark-analytics/base/streaming.yaml

@@ -26,6 +26,8 @@ metadata:
     app.kubernetes.io/part-of: nowchess
 spec:
   replicas: 1
+  strategy:
+    type: Recreate
   selector:
     matchLabels:
       app: spark-live-dashboard