There are people who might be trying to use the wallet or the dashboard with old versions of their browsers, so old that even some APIs are not support (e.g structureClone, refer to Sentry errors for more details)

We decided to display some banner suggesting updating their browsers.

To detect whether a browser is enough up-to-date, we can use the errors we get plus when did the missing APIs get stable, and based on that just render the banner (or any other UI element) if the version is < what is considered up-to-date.