jsonGroupArray emits redundant check for primaryKey not null if specified in filter argument

[seanwoodward]

Description

If a filter argument is supplied checking the primary key is not nil, the jsonGroupArray function will emit a redundant check.

Checklist

• I have determined whether this bug is also reproducible in a vanilla SwiftUI project.
• If possible, I've reproduced the issue using the main branch of this package.
• This issue hasn't been addressed in an existing GitHub issue or discussion.

Expected behavior

Only one check for primary key is not null should be emitted in the SQL.

[seanwoodward]

Should this be addressed in QueryExpression.and?

[stephencelis]

@seanwoodward Want to provide a PR with a failing test, and if you're up for it, attempted fix?

[seanwoodward]

Sure, have a fix for it in jsonGroupArray. Do you have a preference for addressing this in QueryExpression<Bool>.and or in the filter logic in jsonGroupArray?