[Bug] Type Tests are included in dist (canary)

[stefanpenner]

🐞 Describe the Bug

@ember/-internals/runtime/type-tests/* are included in dist, which currently fails with:

Build Error (PackagerRunner) in ../../../../../../emberjs/ember.js/@ember/-internals/runtime/type-tests/core.test.js

Module not found: Error: Can't resolve '../types/core' in '$TMPDIR/embroider/9caab5/emberjs/ember.js/@ember/-internals/runtime/type-tests/core.test.js'

I would seem like we should not produce this file in dist, and the problem will go away (as deleting the file in question does the trick)

🔬 Minimal Reproduction

gh embroider-build/embroider
cd test-packages/macro-sample-addon
// build link ember.js master to this addon
yarn test:ember

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😕 Actual Behavior

Build fails, as embroider attempts to do stuff with the type-tests

🤔 Expected Behavior

Embroider should not fail, as the type tests should most likely not be present in the output.

🌍 Environment

• Ember: master
• Node.js/npm: -

npm version
{
  'macro-sample-addon': '0.0.0',
  npm: '6.13.4',
  ares: '1.15.0',
  brotli: '1.0.7',
  cldr: '35.1',
  http_parser: '2.9.3',
  icu: '64.2',
  llhttp: '2.0.4',
  modules: '72',
  napi: '5',
  nghttp2: '1.40.0',
  node: '12.16.1',
  openssl: '1.1.1d',
  tz: '2019c',
  unicode: '12.1',
  uv: '1.34.0',
  v8: '7.8.279.23-node.31',
  zlib: '1.2.11'
}

• OS: all
• Browser: N/A

➕ Additional Context

I will explore a fix

[stefanpenner]

This appears to have been introduced by #19517 cc @wagenet