This fix prevents carousel snippets from automatically changing slides while a website page is being edited, making the editor usable again. It also restores expected automatic sliding for published carousel snippets, including existing snippets that were affected by the previous behavior change.

task-4134307
opw-4166843
opw-4204546

:warning: this PR requires https://github.com/odoo/odoo/pull/181449 and https://github.com/odoo/odoo/pull/178434 which are not yet merged (18.0 and master, 17.4 is good though).