fix(volsync): use Snapshot copyMethod for Volume Populator

ReplicationDestinations must use copyMethod: Snapshot to create
VolumeSnapshots that Volume Populator can use. Direct mode creates
PVCs which don't work with the Volume Populator pattern.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: mitchross

infrastructure/database/redis/redis-instance/replicationdestination.yaml

@@ -8,7 +8,7 @@ spec:
     schedule: "30 2 * * *"  # Daily at 2:30 AM (30 min after backup)
   restic:
     repository: redis-volsync-secret
-    copyMethod: Direct
+    copyMethod: Snapshot
     storageClassName: longhorn
     accessModes:
       - ReadWriteOnce

infrastructure/storage/container-registry/replicationdestination.yaml

@@ -8,7 +8,7 @@ spec:
     schedule: "30 2 * * *"  # Daily at 2:30 AM (30 min after backup)
   restic:
     repository: container-registry-volsync-secret
-    copyMethod: Direct
+    copyMethod: Snapshot
     storageClassName: longhorn
     accessModes:
       - ReadWriteOnce