This commit uses the `is_html_empty` util method to detect empty HTML fields in cleaner and more resilient fashion than what was done in 808cc53bb02b0f1851a2a229bd5235a5fb944408. closes odoo/odoo#84999 X-original-commit: 89f3aa8a979c5236b587f9690595117b52f0dd63 Signed-off-by: Antoine Vandevenne (anv) <anv@odoo.com>