Illegal invocation with sendBeacon and URL has an error #42

From a very helpful customer, we got this error report:

The following is logged to console:
Simple Analytics: Uncaught TypeError: Illegal invocation
At this stage, it seems exclusively happening on Chrome/Windows.

Good read: https://xgwang.me/posts/you-may-not-know-beacon/

It does suggest that if a URL has an error, sendBeacon will throw "TypeError: Illegal invocation".

This also seemed to effect the next.js project as well: vercel/next.js#23856 (fix: https://github.com/vercel/next.js/pull/26601/files)