Bugfix - Addons relative path

[RuneKR]

Issue: #9343

What I did

Editing the presets function to allow local addons to be included in main.js

How to test

Current function is not tested in existing unit tests as the function is only indirectly exposed.
Test the functionality by adding an addon to main.js like the following:

require.resolve('../packages/node_modules/@my/addon/dist/register')

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[shilman]

Thanks @RuneKR! Can you add at least one test to presets.test.js to show how this works?

[RuneKR]

Sure thing! :)

[RuneKR]

Added test - Mocked the files so really only testing if MacOS is supported. I could create actual mock files, but that would then just test the OS on which the test is run anyway. Looked at current code and this example for my tests: 'https://jestjs.io/docs/en/manual-mocks'

[shilman]

Closing this in favor of #9485, which I think is a simpler and more correct fix/test. Thanks so much for getting to the bottom of this!!!