Integrate Sentry Replay functionality

Desired behavior

In order to get more insight into user issues and the behaviors that cause them, we'd like to integrate Sentry's Session Replays:

Session Replay shows you a video-like reproduction of your user sessions so you can see what happened before, during, and after an error or performance issue occurred. Gain deeper debugging context into issues so that you can reproduce and resolve problems faster without the guesswork. As you play back each session, you can see every user interaction in relation to network requests, DOM events, and console messages. It’s effectively like having DevTools active in your production user sessions.

How to set up: https://docs.sentry.io/platforms/javascript/session-replay/#set-up

Current behavior

This Sentry feature is unused by us.

Value add

Better understanding of user errors and the behaviors that cause them, while maximizing the value of a tool (Sentry) which we already use.

Start with the linked Sentry Session Replay setup guide for JavaScript, then locate the repository's existing Sentry initialization. Configure Session Replay there and verify that user sessions provide the requested debugging context without disrupting the current Sentry integration.