fix: 后台banner分类接口

app/admin/controller/v1/Banner.php

@@ -34,12 +34,12 @@ class Banner
         $datas = [];
         if (!$banners->isEmpty()) {
             $temp = [];
-            $map  = ['pc' => 'PC端', 'mobile' => '移动端'];
+            $map  = ['pc' => ['id' => -1, 'name' => 'PC端'], 'mobile' => ['id' => -2, 'name' => '移动端']];
             foreach ($banners as $banner) {
                 if (!isset($temp[$banner->at_platform])) {
                     $temp[$banner->at_platform] = [
-                        'id'       => 0,
-                        'name'     => $map[$banner->at_platform] ?? '未知平台',
+                        'id'       => $map[$banner->at_platform]['id'] ?? 0,
+                        'name'     => $map[$banner->at_platform]['name'] ?? '未知平台',
                         'children' => []
                     ];
                 }