fix: derived token supply to 0 (#4010)

### Description

Token deployer should always derive token metadata's total supply to 0,
otherwise the collateral token's total supply will be minted initially
on the synthetic, creating 2x the desired total supply.

### Related issues

- Regression introduced by
https://github.com/hyperlane-xyz/hyperlane-monorepo/pull/3820
- opens https://github.com/hyperlane-xyz/hyperlane-monorepo/issues/4013

### Backward compatibility

Yes

### Testing

Unit Tests

.changeset/bright-horses-give.md

@@ -0,0 +1,5 @@
+---
+'@hyperlane-xyz/sdk': patch
+---
+
+Fix initial total supply of synthetic token deployments to 0

typescript/sdk/src/token/deploy.ts

@@ -87,6 +87,9 @@ abstract class TokenDeployer<
     multiProvider: MultiProvider,
     configMap: WarpRouteDeployConfig,
   ): Promise<TokenMetadata | undefined> {
+    // this is used for synthetic token metadata and should always be 0
+    const DERIVED_TOKEN_SUPPLY = 0;
+
     for (const [chain, config] of Object.entries(configMap)) {
       if (isTokenMetadata(config)) {
         return config;
@@ -95,7 +98,7 @@ abstract class TokenDeployer<
       if (isNativeConfig(config)) {
         const nativeToken = multiProvider.getChainMetadata(chain).nativeToken;
         if (nativeToken) {
-          return { totalSupply: 0, ...nativeToken };
+          return { totalSupply: DERIVED_TOKEN_SUPPLY, ...nativeToken };
         }
       }
 
@@ -107,27 +110,25 @@ abstract class TokenDeployer<
             config.token,
             provider,
           );
-          const [name, symbol, totalSupply] = await Promise.all([
+          const [name, symbol] = await Promise.all([
             erc721.name(),
             erc721.symbol(),
-            erc721.totalSupply(),
           ]);
           return {
             name,
             symbol,
-            totalSupply: totalSupply.toString(),
+            totalSupply: DERIVED_TOKEN_SUPPLY,
           };
         }
 
         const erc20 = ERC20__factory.connect(config.token, provider);
-        const [name, symbol, totalSupply, decimals] = await Promise.all([
+        const [name, symbol, decimals] = await Promise.all([
           erc20.name(),
           erc20.symbol(),
-          erc20.totalSupply(),
           erc20.decimals(),
         ]);
 
-        return { name, symbol, totalSupply: totalSupply.toString(), decimals };
+        return { name, symbol, decimals, totalSupply: DERIVED_TOKEN_SUPPLY };
       }
     }