fix(mp): 修复带有 props 的默认条件插槽编译报错的 Bug

[chouchouji]

close #5706

测试代码

<template>
    <view>
        <text v-if="!$slots.default">Text Content</text>
        <slot v-else :item="1"></slot>
    </view>
</template>

编译产物

<view>
  <text wx:if="{{a}}">Text Content</text>
  <slot wx:else name="d"></slot>
  <slot wx:else></slot>
</view>

修复后编译产物

<view>
  <text wx:if="{{a}}">Text Content</text>
  <block wx:else>
    <slot name="d"></slot>
    <slot></slot>
  </block>
</view>

[github-actions]

Size report

Path	Size
packages/size-check/dist/size-check.es.js	47.19 KB (0%)
packages/size-check/dist/style.css	2.82 KB (0%)
packages/uni-app/dist/uni-app.es.js	2.5 KB (0%)
packages/uni-h5-vue/dist/vue.runtime.esm.js	76.41 KB (0%)
packages/uni-mp-vue/dist/vue.runtime.esm.js	43.22 KB (0%)
packages/uni-mp-alipay/dist/uni.api.esm.js	14.8 KB (0%)
packages/uni-mp-alipay/dist/uni.mp.esm.js	8.04 KB (0%)
packages/uni-mp-baidu/dist/uni.api.esm.js	11.33 KB (0%)
packages/uni-mp-baidu/dist/uni.mp.esm.js	9.68 KB (0%)
packages/uni-mp-qq/dist/uni.api.esm.js	10.65 KB (0%)
packages/uni-mp-qq/dist/uni.mp.esm.js	7.6 KB (0%)
packages/uni-mp-toutiao/dist/uni.api.esm.js	10.47 KB (0%)
packages/uni-mp-toutiao/dist/uni.mp.esm.js	9.42 KB (0%)
packages/uni-mp-weixin/dist/uni.api.esm.js	11.65 KB (0%)
packages/uni-mp-weixin/dist/uni.mp.esm.js	8.16 KB (0%)
packages/uni-quickapp-webview/dist/uni.api.esm.js	10.6 KB (0%)
packages/uni-quickapp-webview/dist/uni.mp.esm.js	8.16 KB (0%)