Dataview implicit fields don't seem to be working inside the new dataview query

[isle9]

Describe the bug
Dataview implicit fields don't seem to be working inside the new dataview query.

To Reproduce
FROM !"_system" WHERE type = this.file.link doesn't work in db-folder, but it does in a normal dataview query.

Desktop (please complete the following information):

• OS: [Win 11]
• Version [1.8.0]

[RafaelGB]

"this" implies the context of the current file, but the query does not support it yet, maybe with future dataview versions. The context could be the own database file