## Ticket
6743: Desktop: "Back" in Following Page no longer restores scroll position
## Issue
This was a side-effect of "6609 claimListDiscover: don't re-render until query is done". That PR did not handle the case of navigating backwards, which typically would just need to display past results. It ended up always starting with a blank list on mount, so the scroll position could not be restored correctly.
I don't know why it still worked on Web/Chrome -- maybe the latest browser knows how to move to desired scroll position when the height is available.
## Change
If navigating backwards, initialize the final URI list with the previous result. It is almost always correct, and if not, will be corrected in the effects. This saves us one re-render when navigating backwards too.
4a8c08c8bf