fix(Album): 修复外部样式类无效问题

Author: YYJeffrey

src/album/index.wxml

@@ -1,10 +1,10 @@
 <wxs src="index.wxs" module="album"></wxs>
 <!-- 最外层 view 用于修复 issue 1100 -->
-<view style="display:flex">
+<view class="l-class" style="display:flex">
   <view style="{{album.gridStyle(gapRow, gapColumn, multipleSize, everyRowNumber)}}">
     <block wx:for="{{showUrls}}" wx:key="index" class="child">
       <view class="imageContainer {{album.dimBack(isLong, index, maxNumber, previewFullImage)}}" style="{{album.blockStyle(urls, horizontalScreen, shortSideValue, singleSize, multipleSize)}}">
-        <image class="{{album.dim(isLong, index, maxNumber, previewFullImage)}}}" id='{{index}}' bind:tap="onPreviewTap" style="{{album.blockStyle(urls, horizontalScreen, shortSideValue, singleSize, multipleSize)}}" src="{{newType?item[key]:item}}" mode="{{urls.length === 1?singleMode:multipleMode}}" />
+        <image class="{{album.blockClass(urls, horizontalScreen) + ' ' + album.dim(isLong, index, maxNumber, previewFullImage)}}" id='{{index}}' bind:tap="onPreviewTap" style="{{album.blockStyle(urls, horizontalScreen, shortSideValue, singleSize, multipleSize)}}" src="{{newType?item[key]:item}}" mode="{{urls.length === 1?singleMode:multipleMode}}" />
         <view wx:if="{{album.image(isLong, index, maxNumber, previewFullImage)}}" class="text">+{{urls.length-maxNumber}}</view>
       </view>
     </block>