refactor: 修改array_flatten函数相关

app/index/view/mobile/about_us/introduction.html

@@ -29,7 +29,7 @@
         <div class="iotb_part2 iotb_part22">
             <h1 class="iotbt1">{:lang_i18n('为您提供专属定制服务')}</h1>
             <div class="fdimgs wcu_list">
-                {assign name="flat_service" value=":\think\helper\Arr::flatMap(fn($item) => $item, $service)" /}
+                {assign name="flat_service" value=":array_flatten($service)" /}
                 {volist name="flat_service" id="fs"}
                 <div class="wcu_ltem">
                     <img src="{$fs.image}" alt="" class="fbit">
@@ -43,7 +43,7 @@
         <div class="iotb_part2">
             <h1 class="iotbt1">{:lang_i18n('对于不同的情况')}</h1>
             <div class="fdimgs wcu_list">
-                {assign name="flat_difference" value=":\think\helper\Arr::flatMap(fn($item) => $item, $difference)" /}
+                {assign name="flat_difference" value=":array_flatten($difference)" /}
                 {volist name="flat_difference" id="di"}
                 <div class="wcu_ltem">
                     <img src="{$di.image}" alt="" class="fbit">

app/index/view/mobile/attachment/video.html

@@ -20,7 +20,7 @@
         </div>
         <div class="infolist">
             {notempty name="videos"}
-            {assign name="flat_videos" value=":\think\helper\Arr::flatMap(fn($item) => $item->toArray(), $videos->items())" /}
+            {assign name="flat_videos" value=":array_flatten($videos->items())" /}
             {volist name="flat_videos" id="vo"}
             <div class="vd-item">
                 <video controls="" poster="{$vo.image|default=''}">