How many times were you able to reproduce it?

Every time

Steps to reproduce

1. Add many articles (100 or so) via Reading List danger zone debug screen.
2. Charles the traffic and filter calls by the shared mobile-html resource "javascript"

Expected results

The JS file is only downloaded once.

Actual results

JS file is downloaded over and over again. This is wasteful for many articles. I would expect URLCache to kick in and return a cached version, even if it isn't permanently saved via a Saved Article.

Screenshots

Environments observed

App version: 6.6.0
OS versions: 13.3.1
Device model: iPhone 7
Device language: EN