[FIX] website_sale_options: prevent other session crash after checkout

Check commit https://github.com/odoo/odoo/commit/ef48b81ab127dd717a4a9d106edd5c51121bc8f7

This commit is doing the same for website_sale_option as the optional product
is calling another route to add the product to the cart.
That route needed to be fixed too.

Closes #28209, related to #27508

addons/website_sale/controllers/main.py

@@ -370,7 +370,7 @@ class WebsiteSale(http.Controller):
 
     @http.route(['/shop/cart/update'], type='http', auth="public", methods=['POST'], website=True, csrf=False)
     def cart_update(self, product_id, add_qty=1, set_qty=0, **kw):
-        sale_order = request.website.sale_get_order(force_create=1)
+        sale_order = request.website.sale_get_order(force_create=True)
         if sale_order.state != 'draft':
             request.session['sale_order_id'] = None
             sale_order = request.website.sale_get_order(force_create=True)

addons/website_sale_options/controllers/main.py

@@ -18,7 +18,10 @@ class WebsiteSaleOptions(WebsiteSale):
         if lang:
             request.website = request.website.with_context(lang=lang)
 
-        order = request.website.sale_get_order(force_create=1)
+        order = request.website.sale_get_order(force_create=True)
+        if order.state != 'draft':
+            request.session['sale_order_id'] = None
+            order = request.website.sale_get_order(force_create=True)
         product = request.env['product.product'].browse(int(product_id))
 
         option_ids = product.optional_product_ids.mapped('product_variant_ids').ids