/pool/{id} page hangs in loading state forever if there is no LP position at that id

[JFrankfurt]

if you go to a page like https://app.uniswap.org/#/pool/9999999999999?chain=celo

where the id is not a valid LP position on that network you end up in this loading state forever:

todo:

• design a 404-style "position not valid--are you on the right network?" page