With recent versions of babel, type imports don't get correctly converted to runtime type imports [working on a fix]

[jedwards1211]

After debugging I uncovered this apparent regression in @babel/traverse: babel/babel#12570

It's causing the ImportDeclaration exit visitor to not get called in some cases, causing

import { type Foo } from './Foo'

To get converted to

require('./Foo')

Instead of the expected

const { Foo: _Foo } = require('./Foo')