fix: make USV2 factory configurable in Executor

- This factory is not the same for Ethereum and Base, so Base txs were failing when verifying pool addresses.
- I've double checked that we don't have this problem for Balancer V2 - the vault address in the same on Base and on Ethereum Mainnet.

foundry/test/executors/UniswapV3Executor.t.sol

@@ -44,7 +44,7 @@ contract UniswapV3ExecutorTest is Test, Constants {
         uint256 forkBlock = 17323404;
         vm.createSelectFork(vm.rpcUrl("mainnet"), forkBlock);
 
-        uniswapV3Exposed = new UniswapV3ExecutorExposed(USV3_FACTORY);
+        uniswapV3Exposed = new UniswapV3ExecutorExposed(USV3_FACTORY_ETHEREUM);
     }
 
     function testDecodeParams() public view {