Fix nonce synchronization issues in EVM deployments by adding slow flag to forge (wormhole-foundation#647)

* add slow flag to evm deployments with the cli to prevent issues with the local nonce

* add slow flag to the upgradeEvm function as well

* extract Mezo slow flag logic into dedicated function

Author: evgeniko

cli/src/index.ts

@@ -1464,14 +1464,15 @@ async function upgradeEvm<N extends Network, C extends EvmChains>(
     }
 
     console.log("Upgrading manager...");
+    const slowFlag = getSlowFlag(ctx.chain);
     await withCustomEvmDeployerScript(pwd, async () => {
         execSync(
             `forge script --via-ir script/DeployWormholeNtt.s.sol \
 --rpc-url ${ctx.config.rpc} \
 --sig "upgrade(address)" \
 ${ntt.managerAddress} \
 ${signerArgs} \
---broadcast \
+--broadcast ${slowFlag} \
 ${verifyArgs} | tee last-run.stdout`, {
                 cwd: `${pwd}/evm`,
                 stdio: "inherit"
@@ -1594,6 +1595,7 @@ async function deployEvm<N extends Network, C extends Chain>(
     console.log("Deploying manager...");
     const deploy = async (simulate: boolean): Promise<string> => {
         const simulateArg = simulate ? "" : "--skip-simulation";
+        const slowFlag = getSlowFlag(ch.chain);
         const effectiveRelayer = relayer || "0x0000000000000000000000000000000000000000";
         await withCustomEvmDeployerScript(pwd, async () => {
             try {
@@ -1602,7 +1604,7 @@ forge script --via-ir script/DeployWormholeNtt.s.sol \
 --rpc-url ${rpc} \
 ${simulateArg} \
 --sig "${sig}" ${wormhole} ${token} ${effectiveRelayer} ${specialRelayer} ${decimals} ${modeUint} \
---broadcast ${verifyArgs.join(' ')} ${signerArgs} 2>&1 | tee last-run.stdout`, {
+--broadcast ${slowFlag} ${verifyArgs.join(' ')} ${signerArgs} 2>&1 | tee last-run.stdout`, {
                         cwd: `${pwd}/evm`,
                         encoding: 'utf8',
                         stdio: 'inherit'
@@ -2409,6 +2411,10 @@ function searchHexInBinary(binaryPath: string, searchHex: string) {
     return found;
 }
 
+function getSlowFlag(chain: Chain): string {
+    return chain === "Mezo" ? "--slow" : "";
+}
+
 export function ensureNttRoot(pwd: string = ".") {
     if (!fs.existsSync(`${pwd}/evm/foundry.toml`) || !fs.existsSync(`${pwd}/solana/Anchor.toml`)) {
         console.error("Run this command from the root of an NTT project.");