refactor(ui): 统一复选框组件使用 defineModel 和 model-value 语法

- 在 BenchmarkTable.vue 中使用 defineModel 替代 props 和 emit 管理选中状态
- 统一所有复选框组件使用 model-value 属性替代 checked 属性
- 移除不必要的 class 样式和事件修饰符，简化代码逻辑
- 优化表格头部固定样式，提升滚动体验

frontend/app/web-gold/src/views/system/task-management/digital-human-task/index.vue

@@ -89,8 +89,8 @@
           <TableRow>
             <TableHead class="w-[50px]">
               <Checkbox
-                :checked="isAllSelected"
-                @update:checked="handleSelectAll"
+                :model-value="isAllSelected"
+                @update:model-value="handleSelectAll"
               />
             </TableHead>
             <TableHead class="w-[80px]">ID</TableHead>
@@ -105,8 +105,8 @@
           <TableRow v-for="record in list" :key="record.id">
             <TableCell>
               <Checkbox
-                :checked="selectedRowKeys.includes(record.id)"
-                @update:checked="handleSelectRow(record.id)"
+                :model-value="selectedRowKeys.includes(record.id)"
+                @update:model-value="handleSelectRow(record.id)"
               />
             </TableCell>
             <TableCell>{{ record.id }}</TableCell>

frontend/app/web-gold/src/views/system/task-management/mix-task/index.vue

@@ -99,8 +99,8 @@
           <TableRow>
             <TableHead class="w-[50px]">
               <Checkbox
-                :checked="isAllSelected"
-                @update:checked="handleSelectAll"
+                :model-value="isAllSelected"
+                @update:model-value="handleSelectAll"
               />
             </TableHead>
             <TableHead class="w-[70px]">ID</TableHead>
@@ -120,8 +120,8 @@
             >
               <TableCell>
                 <Checkbox
-                  :checked="selectedRowKeys.includes(record.id)"
-                  @update:checked.stop="handleSelectRow(record.id)"
+                  :model-value="selectedRowKeys.includes(record.id)"
+                  @update:model-value.stop="handleSelectRow(record.id)"
                 />
               </TableCell>
               <TableCell>{{ record.id }}</TableCell>