fix: Correct admin server port in Helm worker deployment (#7872)

The worker deployment was incorrectly passing the admin gRPC port (33646)
to the -admin flag. However, the SeaweedFS worker command automatically
calculates the gRPC port by adding 10000 to the HTTP port provided.

This caused workers to attempt connection to port 43646 (33646 + 10000)
instead of the correct gRPC port 33646 (23646 + 10000).

Changes:
- Update worker-deployment.yaml to use admin.port instead of admin.grpcPort
- Workers now correctly connect to admin HTTP port, allowing the binary
  to calculate the gRPC port automatically

Fixes workers failing with:
"dial tcp <admin-ip>:43646: connect: no route to host"

Related:
- Worker code: weed/pb/grpc_client_server.go:272 (grpcPort = port + 10000)
- Worker docs: weed/command/worker.go:36 (admin HTTP port + 10000)

k8s/charts/seaweedfs/templates/worker/worker-deployment.yaml

@@ -134,7 +134,7 @@ spec:
               {{- if .Values.worker.adminServer }}
               -admin={{ .Values.worker.adminServer }} \
               {{- else }}
-              -admin={{ template "seaweedfs.name" . }}-admin.{{ .Release.Namespace }}:{{ .Values.admin.grpcPort }} \
+              -admin={{ template "seaweedfs.name" . }}-admin.{{ .Release.Namespace }}:{{ .Values.admin.port }} \
               {{- end }}
               -capabilities={{ .Values.worker.capabilities }} \
               -maxConcurrent={{ .Values.worker.maxConcurrent }} \