This update simplifies the design of product snippets on the website by removing a redundant option for default arrow positioning. The change streamlines the user experience and ensures consistent styling across product displays. This aligns with ongoing efforts to optimize website performance and visual appeal.

This PR remove the "**default**" arrow position option and its related CSS from the dynamic product snippet and renames the "**inside**" option to "**default**". This change is based on the discussion here - https://github.com/odoo/odoo/pull/237876#issuecomment-3777902859