contracts-bedrock: visibility into flake

A flake in CI was introduced when https://github.com/ethereum-optimism/optimism/pull/7928
was merged. It is probably due to a race condition when reading a file
from disk. Is there a way to have foundry only do something once for the
entire test suite? Tried moving things to the constructor instead of
`setUp` but that did not work. Ideally we do not need to read the file
from disk for each contract deployed, this adds a lot of overhead.
A solution around this is to refactor the way that the deploy script
works or to add in the env var that will skip the check that sometimes
fails.

packages/contracts-bedrock/scripts/Deployer.sol

@@ -88,7 +88,10 @@ abstract contract Deployer is Script {
         string memory chainIdPath = string.concat(deploymentsDir, "/.chainId");
         try vm.readFile(chainIdPath) returns (string memory localChainId) {
             if (vm.envOr("STRICT_DEPLOYMENT", true)) {
-                require(vm.parseUint(localChainId) == chainId, "Misconfigured networks");
+                require(
+                    vm.parseUint(localChainId) == chainId,
+                    string.concat("Misconfigured networks: ", localChainId, " != ", vm.toString(chainId))
+                );
             }
         } catch {
             vm.writeFile(chainIdPath, vm.toString(chainId));