Before this commit, `o_grid_item_image` was not handling videos but image-only. This commit adds support for `.media_iframe_video` in addition to `img` to ensure consistent styling across both images and videos within the grid items. task-3103775 closes odoo/odoo#125075 X-original-commit: b54b34e6c34f435b2923e7b571b2bb2e4e9e0f08 Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>