feat: pay with any token feature flag (#5814)

src/components/FeatureFlagModal/FeatureFlagModal.tsx

 import { BaseVariant, FeatureFlag, featureFlagSettings, useUpdateFlag } from 'featureFlags'
 import { useFiatOnrampFlag } from 'featureFlags/flags/fiatOnramp'
 import { NftListV2Variant, useNftListV2Flag } from 'featureFlags/flags/nftListV2'
+import { PayWithAnyTokenVariant, usePayWithAnyTokenFlag } from 'featureFlags/flags/payWithAnyToken'
 import { Permit2Variant, usePermit2Flag } from 'featureFlags/flags/permit2'
 import { TraceJsonRpcVariant, useTraceJsonRpcFlag } from 'featureFlags/flags/traceJsonRpc'
 import { useAtomValue, useUpdateAtom } from 'jotai/utils'
@@ -222,6 +223,12 @@ export default function FeatureFlagModal() {
         featureFlag={FeatureFlag.nftListV2}
         label="NFT Listing Page v2"
       />
+      <FeatureFlagOption
+        variant={PayWithAnyTokenVariant}
+        value={usePayWithAnyTokenFlag()}
+        featureFlag={FeatureFlag.payWithAnyToken}
+        label="Pay With Any Token"
+      />
       <FeatureFlagGroup name="Debug">
         <FeatureFlagOption
           variant={TraceJsonRpcVariant}

src/featureFlags/flags/featureFlags.ts

@@ -3,4 +3,5 @@ export enum FeatureFlag {
   traceJsonRpc = 'traceJsonRpc',
   permit2 = 'permit2',
   nftListV2 = 'nftListV2',
+  payWithAnyToken = 'payWithAnyToken',
 }

src/featureFlags/flags/payWithAnyToken.ts

+import { BaseVariant, FeatureFlag, useBaseFlag } from '../index'
+
+export function usePayWithAnyTokenFlag(): BaseVariant {
+  return useBaseFlag(FeatureFlag.payWithAnyToken)
+}
+
+export { BaseVariant as PayWithAnyTokenVariant }