As a user of reading list sync on multiple devices, I want to be able to update syncing within a single reading list to which I have saved articles, so that I can continue to browse within that list without needing to exist to all lists to refresh.
Steps to reproduce
**Pre-conditions: User has reading list syncing enabled and is logged into their account on 2 devices.
- Open device A to view the default 'Saved' list, noting the number of articles saved.
- Go to device B and add some articles to the default 'Saved' list.
- Return to device A to view the default 'Saved' list. Upon seeing that the list has not updated, pull down to refresh.
Pulling down to refresh in the individual list triggers syncing, and the 'Saved' list updates to show the articles added in step 2.