require using return value of useProxy

[nmay231]

I have a component that originally used useSnapshot(proxyObject) to rerender whenever any part of the recursive object changed. I absentmindedly updated it to useProxy(...) and it broke without my knowledge.

Since useProxy(...) by itself (no assignment or attr access) is useless, I think this plugin should warn about either switching to useSnapshot(...) if you want a catch-all rerender or to use the result returned to subscribe to specific changes.