fix: popup-taro版本，自定义内容无法获取100%高度问题修复 (#1308)

Co-authored-by: lkjh3214 <13121007159@163.com>

src/packages/__VUE/popup/index.scss

@@ -87,6 +87,9 @@
   background-color: $white;
   transition: transform 0.2s;
   -webkit-overflow-scrolling: touch;
+  .nutui-popup__content-wrapper {
+    height: 100%;
+  }
 }
 
 .nut-overflow-hidden {

src/packages/__VUE/popup/index.taro.vue

@@ -13,7 +13,7 @@
     />
     <Transition :name="transitionName" @after-enter="onOpened" @after-leave="onClosed">
       <view v-show="visible" :class="classes" :style="popStyle" @click="onClick">
-        <div v-show="showSlot"><slot></slot></div>
+        <div class="nutui-popup__content-wrapper" v-show="showSlot"><slot></slot></div>
         <view
           v-if="closed"
           @click="onClickCloseIcon"