引用微信插件后，会导致数组更新不会渲染页面

**问题描述**
在manifest.json配置文件里面引入了微信插件，会导致对数组进行操作时，页面上不会更新渲染。如果将这插件配置去掉，则可以正常渲染，但是这时会导致插件无法使用

**复现步骤**
mainifest.json 添加 plugins
	"mp-weixin": {
		"appid": "",
		"setting": {
			"urlCheck": false
		},
		"usingComponents": true,
		"plugins": {
			"ocr-plugin": {
				"version": "2.0.2",
				"provider": "wx4418e3e031e551be"
			}
		}
	},

page.vue
<template>
	<view>
		<form >
			
			<view class="cu-bar bg-white margin-top">
				<view class="action">
					验收照片
				</view>
				<view class="action">
					{{form.imgList.length}}/9
				</view>
			</view>
			<view class="cu-form-group">
				<view class="grid col-4 grid-square flex-sub">
					<view class="bg-img" v-for="(item,index) in form.imgList" :key="index" @tap="ViewImage" :data-url="form.imgList[index]">
						<image :src="item" mode="aspectFill"></image>
						<view class="cu-tag bg-red" @tap.stop="DelImg" :data-index="index">
							<text class='cuIcon-close'></text>
						</view>
					</view>
					<view class="solids" @tap="ChooseImage" v-if="form.imgList.length<9">
						<text class='cuIcon-cameraadd'></text>
					</view>
				</view>
			</view>
			

		</form>
	</view>
</template>

<script>
	
	


	export default {
	

		data() {
			return {
				form: {
					
					imgList: []
				},
				
			};
		},
		onLoad(option) {
			
		},
		methods: {
			

			ChooseImage() {
				let imgSize = this.form.imgList.length;
				uni.chooseImage({
					count: 9 - imgSize, //默认9
					sizeType: ['original', 'compressed'], 
					success: (res) => {
						if (this.form.imgList.length != 0) {
							this.form.imgList = this.form.imgList.concat(res.tempFilePaths)
						} else {
							this.form.imgList = res.tempFilePaths
						}
					}
				});
			},
			ViewImage(e) {
				uni.previewImage({
					urls: this.form.imgList,
					current: e.currentTarget.dataset.url
				});
			},
			DelImg(e) {
				uni.showModal({
					title: '提示',
					content: '确认要删除吗？',
					cancelText: '取消',
					confirmText: '确认',
					success: res => {
						if (res.confirm) {
							this.form.imgList.splice(e.currentTarget.dataset.index, 1)
						}
					}
				})
			},
			
			

		}
	}
</script>


**预期结果**
上面代码对图片进行删除操作时，页面上能移除掉
**实际结果**
对数组进行splice操作时，页面上没有渲染，实际上数组里面的数据已经删掉了



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引用微信插件后，会导致数组更新不会渲染页面 #694

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