pub fn check_hierarchy_component_has_valid_parent<T: Component>(
parent_query: Query<'_, '_, (Entity, &Parent, Option<&Name>), (With<T>, Or<(Changed<Parent>, Added<T>)>)>,
component_query: Query<'_, '_, (), With<T>>,
already_diagnosed: Local<'_, HashSet<Entity>>
)Expand description
System to print a warning for each Entity with a T component
which parent hasn’t a T component.
Hierarchy propagations are top-down, and limited only to entities
with a specific component (such as InheritedVisibility and GlobalTransform).
This means that entities with one of those component
and a parent without the same component is probably a programming error.
(See B0004 explanation linked in warning message)