Since a recent commit[1], many2one field was improved, and the inner components
are now wrapped within a newly introduced div `o_field_many2one_selection`.
Reference field extends many2one field and due to newly introduced wrapper div,
few editable form view related css rules (mainly for `o_row`) were broken and
the referece field was a mess in editable form view.
This commit fixes the issue by adding reference field specific rules that
restores the UI in the editable form view.
This commit fixes the issue by adding the class "o_row"
on the <div class='.o_field_many2one_selection'> containing the <select>
and the <input>.
commit[1] - 288b24c
TaskID-2453138
closesodoo/odoo#72833
X-original-commit: 1f14652aca91763caf271c248c7576978671cfca
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>