[FIX] account: change the type of name field in 'account.move.line'

-When 'Product Description' on several line in sale.order.line.
 In that case, In 'Sale Order' report description print as it is but
 In 'Invoice' report lines are all fitted into one single line.

-By this commit solved this issue.

task- 2127652
closes- odoo#42006

closes odoo/odoo#42006

Signed-off-by: Damien Bouvy (dbo) <dbo@odoo.com>