* feat: add statsig feature gate for widget

* feat: move statsig check into featureFlag infra

* fix: move statsig check deeper into feature flag code

* Update src/featureFlags/flags/featureFlags.ts
Co-authored-by: Zach Pomerantz <zzmp@uniswap.org>

* Update src/featureFlags/flags/dummyFeatureGate.ts
Co-authored-by: Zach Pomerantz <zzmp@uniswap.org>

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Co-authored-by: Zach Pomerantz <zzmp@uniswap.org>