insert_unit_bundle lint diagnostic cannot find expression of unit if created outside Commands::spawn()

[BD103]

#![feature(register_tool)]
#![register_tool(bevy)]
#![deny(bevy::insert_unit_bundle)]

use bevy::prelude::*;

fn my_system(mut commands: Commands) {
    // Error emitted here:
    commands.spawn(bundle());
    //             ^^^^^^^^
}

fn bundle() -> (Name, ()) {
    // Error should be emitted here:
    (Name::new("Foo"), ())
    //                 ^^
}

insert_unit_bundle expects the tuple bundle to be created inside of Commands::spawn(). If it is created outside, it will not recurse into the expression to find the erroneous unit ().