Previously, we would tear down to a blank white page. Now, for errors within most page content, we show a cute error message with a grundo programmer!
To test, visit `/?send-test-error-for-sentry`, which will trigger an intentional render error on the home page.
Note that this does _not_ cover pages that don't use PageLayout, namely the wardrobe page! I'll want to add other boundaries there…
Still getting some chunk load errors in my Sentry reporting! My hunch is these are the culprit. I hooope that after this the errors are pretty much gone! If not, then I'm missing something about what causes these failures…
