Following https://github.com/odoo/odoo/commit/5658e337c3e0385d3d116e34404ef4086b3e94f0: The modal.less file is now in the common assets so that the dialogs' style is shared instead of duplicated.
Following https://github.com/odoo/odoo/commit/5658e337c3e0385d3d116e34404ef4086b3e94f0: The modal.less file is now in the common assets so that the dialogs' style is shared instead of duplicated.