Adapts the layouts of the immediate production and the production's backorder to match the new grid css for groups. Part of task-2985735 closes odoo/odoo#102958 X-original-commit: 5b999ee40e02647c0d2edfbce7081f6f8cf05857 Signed-off-by: William Henrotin (whe) <whe@odoo.com>