fix: 资产详情办理沉默期延期报无权执行此操作，弹窗被表格固定列遮挡

- 延期弹窗、沉默期流水弹窗的 allowed 未传时默认允许：Vue 会把未传的布尔 prop 当成 false，资产详情入口一律被拦截
- 沉默期相关弹窗挂到 body，避免在表格固定列里渲染被其他固定列盖住

src/components/business/package-silence/SilenceExtendDialog.vue

@@ -1,6 +1,7 @@
 <template>
   <ElDialog
     :model-value="true"
+    append-to-body
     title="办理沉默期延期"
     width="min(760px, 96vw)"
     destroy-on-close
@@ -209,7 +210,11 @@
   } from '@/types/api/packageSilenceContract'
   import VoucherUpload from '@/components/business/VoucherUpload.vue'
   import SilenceTable from './SilenceTable.vue'
-  const props = defineProps<{ usageId?: number; allowed?: boolean; batchMode?: boolean }>()
+  // allowed 未传时视为允许：Vue 会把未传的布尔 prop 当成 false，不设默认值时资产详情入口一律报"无权执行此操作"
+  const props = withDefaults(
+    defineProps<{ usageId?: number; allowed?: boolean; batchMode?: boolean }>(),
+    { allowed: true, batchMode: false }
+  )
   const emit = defineEmits<{ close: []; changed: [] }>()
   const { hasAuth } = useAuth(),
     user = useUserStore()

src/components/business/package-silence/SilencePolicyDialog.vue

@@ -1,5 +1,6 @@
 <template>
   <ElDialog
+    append-to-body
     :model-value="true"
     :title="id ? '编辑延期政策' : '新增延期政策'"
     width="min(780px, 96vw)"

src/components/business/package-silence/SilenceRecordsDialog.vue

@@ -1,6 +1,7 @@
 <template>
   <ElDialog
     :model-value="true"
+    append-to-body
     :title="firstPurchase ? '首次购买套餐记录' : '沉默期流水'"
     width="min(1100px, 96vw)"
     destroy-on-close
@@ -16,12 +17,16 @@
   import { useSchedulerRequest } from '@/composables/useSchedulerRequest'
   import { silenceData, silenceId } from '@/utils/business/silenceExtension'
   import SilenceTable from './SilenceTable.vue'
-  const props = defineProps<{
-    usageId?: number
-    assetId?: number
-    assetType?: 'card' | 'device'
-    allowed?: boolean
-  }>()
+  // allowed 未传时视为允许（Vue 会把未传的布尔 prop 当成 false）
+  const props = withDefaults(
+    defineProps<{
+      usageId?: number
+      assetId?: number
+      assetType?: 'card' | 'device'
+      allowed?: boolean
+    }>(),
+    { allowed: true }
+  )
   defineEmits<{ close: [] }>()
   const firstPurchase = computed(() => !!props.assetType)
   const { data, error, loading, load } = useSchedulerRequest<object[]>(