prior to this commit : there was a big gap between subject and recipients in mass mailing with this commit: the gap has been removed by improving css related to mail emoji drop-down (resopnsible for this gap). task - 2291575 closes odoo/odoo#54940 X-original-commit: ae4c9be4419604affd980ae80b48f738a70b0b2c Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>