Function apply_contact_status_changes 

pub fn apply_contact_status_changes(
    changes: ResMut<'_, ContactStatusChangeQueue>,
    contact_graph: Res<'_, ContactGraph>,
    constraint_graph: ResMut<'_, ConstraintGraph>,
    islands: Option<ResMut<'_, PhysicsIslands>>,
    body_islands: Query<'_, '_, &mut BodyIslandNode, Or<(With<Disabled>, Without<Disabled>)>>,
    commands: Commands<'_, '_>,
)

Applies the ContactStatusChanges to the ConstraintGraph and PhysicsIslands.