fix 华为P系列手机上删除富文本的bug，demo可复现 #99

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allenymt wants to merge 2 commits intofluttercandies:v1.12.13from

allenymt:v1.12.13

Commits on Nov 16, 2020

fix 华为手机上删除富文本的bug，demo可复现
yulun
committed

Commits on Nov 19, 2020

fix 华为p系列手机删除的问题
yulun
committed