Fix line_order when we have children with children

[MaximilienR-easya]

Fix

Fix case when we have children with children that are not taken into account and cause a problem with the rank of the lines

[eldy]

What was the trouble ? Can you provide an example ?

[MaximilienR-easya]

In a case that we have a product (Test0) who have a child (Test00) who also have child (test01, test02, test03, test04).

Without the Fix we obtain that

But if we check children recursively, we obtain that

If we don't check the children recursively, we can have case like this one where everything is mixed up and not ordered

[MaximilienR-easya]

@eldy do you need more exemple ?