Adding additional packages to common makes react-native build fail

Hi Ben,

First of all thanks a lot for making the video series, it saved me a lot of time fiddling with configurations. An issue that I keep having though is that if I add additional packages to the common folder (let's say mobx-react-lite for example) The react native build will fail with the following message:

It is actually present in:
`/Users/dennis/Documents/minibrew-rnw-poc/node_modules`

If I add the packages to the app package.json and set it to not hoist it will build succesfully. Have you ever seen this issue or do you know how to solve this?

Start by reproducing the React Native build with an additional package such as mobx-react-lite in the common folder, then compare the common and app package.json hoisting behavior and the reported node_modules location. Done means the React Native build succeeds with the package declared in common without requiring it to be added separately to the app package.json.

Written by the indexing model from the issue text.