Boolean expressions treated weirdly for `possibly more than one element returned by an expression in a FILTER clause` warning

[jackfischer]

• Gel Version: 6.11
• Gel CLI Version: 7.8.0

This is obviously extremely minor. Flagging in case it is a hint of a bigger problem.

1. default.gel has just filter .is_active

$ gel migration create
warning: QueryError
     ┌─ /Users/jack/dev/app/dbschema/default.gel:1382:20
     │
1382 │             filter .is_active
     │                    ^^^^^^^^^^ possibly more than one element returned by an expression in a FILTER clause
...

3. uncomment, default.gel has filter .is_active = true

$ gel migration create
did you alter...

The = true seems irrelevant here? Hence the weirdness

Schema:

type FoundationModel {
        single link activePrice := (
            select .<FoundationModel[is FoundationModelPrice]
            filter .is_active # = true
            order by .startDate desc
            limit 1
        );
}
type FoundationModelPrice {
        required single link FoundationModel: FoundationModel;
        required property startDate: datetime;
        property endDate: datetime;
        required property is_active := ((.startDate < datetime_of_statement() ) and ((not exists .endDate) or (.endDate > datetime_of_statement())) ?? false);
}