No `./barrel/index.js` completions when `moduleResolution` is set to `NodeNext`

[zaguiini]

When the TS project's moduleResolution is set to NodeNext, the completions API is not returning suggestions to import directly from the barrel file.

See microsoft/TypeScript#54764.

There's some progress in https://github.com/zaguiini/typescript-virtual-barrel/tree/fix/add-barrel-completions-to-nodenext-projects.