Uniswap Protocol v4

test updates (#932)

* fix fork tests

* allow fork cheatcodes

* pr feedback yee

* woohoo

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Co-authored-by: Alice Henshaw <henshawalice@gmail.com>
Co-authored-by: saucepoint <saucepoint@protonmail.com>
Co-authored-by: dianakocsis <diana.kocsis@uniswap.org>