fix: merge filer service annotations to avoid duplicate keys in Helm (#10293)

k8s/charts/seaweedfs/templates/filer/filer-service.yaml

@@ -2,8 +2,6 @@
 apiVersion: v1
 kind: Service
 metadata:
-  annotations:
-    service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
   name: {{ include "seaweedfs.componentName" (list . "filer") }}
   namespace: {{ .Release.Namespace }}
   labels:
@@ -12,8 +10,9 @@ metadata:
     app.kubernetes.io/managed-by: {{ .Release.Service }}
     app.kubernetes.io/instance: {{ .Release.Name }}
     app.kubernetes.io/component: filer
-{{- if .Values.filer.annotations }}
   annotations:
+    service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
+{{- if .Values.filer.annotations }}
     {{- toYaml .Values.filer.annotations | nindent 4 }}
 {{- end }}
 spec: