chore: /admin/usage页面增加一个刷新按钮

frontend/src/components/admin/usage/UsageFilters.vue

@@ -154,6 +154,9 @@
 
       <!-- Right: actions -->
       <div v-if="showActions" class="flex w-full flex-wrap items-center justify-end gap-3 sm:w-auto">
+        <button type="button" @click="$emit('refresh')" class="btn btn-secondary">
+          {{ t('common.refresh') }}
+        </button>
         <button type="button" @click="$emit('reset')" class="btn btn-secondary">
           {{ t('common.reset') }}
         </button>
@@ -194,6 +197,7 @@ const emit = defineEmits([
   'update:startDate',
   'update:endDate',
   'change',
+  'refresh',
   'reset',
   'export',
   'cleanup'