Since odoo/odoo@209a97c, the drag&drop of a kanban card in a columnn is highlighted. This feature was tested visually on a build that was not up to date with master. Resulting in a visual conflict with [classes.push("bg-100");](https://github.com/odoo/odoo/commit/7cfe50749f89a2e2fdd5bfdcc943210f891e38c9#diff-4de8437424d1b687477e865e387b017fc5a6a86e9c50c9ea198da79d3a7a1a4cR266) which overrides the highlight background-color. This commit resolves this conflict to have the drag&drop highlight background. closes odoo/odoo#99441 Signed-off-by: Simon Genin (ges@odoo) <ges@odoo.com>