*: website
When declaring a SnippetOption, it is now possible to specify if the
display of the handles overlay should be visible on the snippet element.
By default, it is set to false, and if the selected snippet element does
not have any option that require the handles to be displayed, we will
display them on the first parent element that needs the handles to be
displayed.
In the context of an image, the handles will be displayed on the parent
column, as the image does not have an option that require the handles.
Part of https://github.com/odoo/odoo/pull/66550
task-2431684
closesodoo/odoo#66550
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>