fix: bring cow back (#2911)

Author: mgrabina

src/components/transactions/Swap/helpers/shared/provider.helpers.ts

@@ -67,8 +67,6 @@ export const getSwitchProvider = ({
   shouldUseFlashloan?: boolean;
   swapType: SwapType;
 }): SwapProvider | undefined => {
-  return SwapProvider.PARASWAP; // TODO: TEMPORARY, REMOVE ONCE COW IS FIXED
-
   if (
     isSwapSupportedByCowProtocol(chainId, assetFrom, assetTo, swapType, shouldUseFlashloan ?? false)
   ) {