Since the bootstrap 5 merge at [1], when you click on an image in the Image Wall block, the modal no longer opens. This commit restores that and adds a test to make sure this problem does not happen again. Steps to reproduce: - Drop the "Image wall" block in a page - Save - Click on an image -> The modal does not open [1]: https://github.com/odoo/odoo/commit/971e5a91aab96d36129a823e03f1f9f1b1293968 task-2937538 closes odoo/odoo#97053 Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>