Resolve undefined variable for listed by value

[TatisLois]

Why

item is not defined in the BuyModal component and causes the buying flow to break. The value representing item is passed in as a prop named token. Naming/Data flow will be an area of improvement when the modals are refactored + types will help.

I also left a small comment in apps/next-react/src/components/TokenGridV5.js mentioning that the value of token={buyModal} is the same as an item in the items list.

How

Update references to item to token

Test Plan

Tested locally by going through a few buy flows

CALL OUT

Eslint should have caught this and when I tested it out, I had inconsistent results 😱 needs to be looked into...

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[TatisLois]

Going to make the call to merge without approvals because of time sensitively -> https://showtime-rq88331.slack.com/archives/C02Q0E4PBD0/p1640890547246400