fix: parse root dir even if inside a node_modules folder

[KManolov3]

Resolves

NOTE: This may not need to be merged in case scratch-android starts using scratch-gui from an npm package, instead of a git commit as it does currently.

A dependency for https://scratchfoundation.atlassian.net/browse/UEPR-139

Proposed Changes

Force babel to parse the root folder, even if inside a node_modules futher up the hierarchy.

Reason for Changes

In another repo - scratch-android - we are manually building scratch-gui by going inside its folder (which is inside node_modules of scratch-android) and making a webpack build. After the update of scratch-gui to use scratch-webpack-config that stopped working, since currently there is a rule which prevents babel from parsing folders inside a node_modules folder. However that is not relative to the the pwd so if the project we are trying to build is inside a node_modules further up the chain, babel will not transpile the necessary files (e.g. .jsx files).

[KManolov3]

This fix is not needed anymore, since we are switching out from building GUI from node_modules in scratch-android