fix(babel-plugin-export-metadata): re-export causes meta error

[fi3ework]

Description

This PR could fix #794 . @pedronauck
Fix re-export caused error. Following re-export are fixed:

export { default } from './a'

export { a } from './a'

export { default as b } from './a'

export { a as default } from './a'

export { a as b } from './a'

Review

• add tests

[pedronauck]

Real cool dude, thanks a lot 🙏