Smart item fails to load

Lastraum's NFT wall having issues to load inside builder (working fine locally) probably due to `prepareScript` failing to process the bundle. The issue seems to arise when loading user data, which uses a `@decentraland/...` system import. Those used to fail and where fixed by https://github.com/decentraland/builder/pull/1374 but it looks like something in this item is still breaking the import when using system deps.