[FW][FIX] website: snippet_popup_and_animations tour

[fw-bot]

In this commit, we fix the tour snippet_popup_and_animations. For trigger: "...olumns .row > :last-child:not(:has(.o_animating))", :not(:has) is always true because no child has class o_animating. When the goal is check that the element has not a class, just use :not Also, when the scroll is well done, the element become invisible. So we need to add :hidden.

Forward-Port-Of: odoo/odoo#215183

[robodoo]

[fw-bot]

@pipu-odoo @bastien-ipb this PR targets master and is the last of the forward-port chain containing:

• odoo/odoo#215294
• odoo/odoo#215278
• odoo/odoo#215259

To merge the full chain, use

@robodoo r+

More info at https://github.com/odoo/odoo/wiki/Mergebot#forward-port

[pipu-odoo]

@robodoo r+