[FIX] website: adapt Facebook snippet to API changes

Facebook API does not accept float values for height and width
parameters anymore.

closes odoo/odoo#32970

Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

addons/website/static/src/js/content/snippets.animation.js

@@ -1033,7 +1033,7 @@ registry.facebookPage = Animation.extend({
         if (!params.href) {
             return def;
         }
-        params.width = utils.confine(this.$el.width(), 180, 500);
+        params.width = utils.confine(Math.floor(this.$el.width()), 180, 500);
 
         var src = $.param.querystring('https://www.facebook.com/plugins/page.php', params);
         this.$iframe = $('<iframe/>', {