[FIX] website: only open s_popup snippet once (outside of editor)
[FIX] website: only open s_popup snippet once (outside of editor)

When the snippet was configured to be opened "on exit", it was opened
on every screen exit until the page was reloaded/left.

Part of https://github.com/odoo/odoo/pull/52663

closes odoo/odoo#52686

X-original-commit: e07a25c40dc48ff36150f5a10461d95a86e95804
Signed-off-by: Quentin Smetz (qsm) <75b324bb495ac8d4f83496f7c52eda774af7ed7a@odoo.com>

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo