[Android] weex page will unable to render in production environment when import `he` and OS is Android 5.1

[ReedSun]

Describe the bug

When the device's system is Android 5.1, if he is imported, even if it is not used, the Weex page will be stuck in the loading state and cannot be rendered in only production environment(uglify and mangle). In the development environment, everything is normal.

To Reproduce

First, install he.

npm i he

Then, import it.

<template>
...
</template>
<script>
import he from 'he'
</script>

Finally, run npm run build, and the bug will appear.

Environment

• Device: 魅族 魅蓝2
• OS: Android 5.1
• Version 28
• Build from source yes

Expected behavior

render normal

Screenshots

Additional context

Maybe this problem has something to do with #2563 #2616 #2519 #2213