Erc4626 6 decimal asset support (#4623)

* fix: normalize erc4626 conversion rates to 18 decimals for all assets

* fix: add explicity type annotations to fix bifrost typescript errors

Author: jimboevans

helpers/curators/index.ts

@@ -146,13 +146,16 @@ async function getVaultERC4626Info(options: FetchOptions, vaults: Array<string>)
   for (let i = 0; i < vaults.length; i++) {
     const asset = assets[i]
     if (asset) {
+      const assetDecimals = Number(decimals[i]);
+      const decimalAdjustment = BigInt(10 ** (18 - assetDecimals));
+
       vaultInfo.push({
         vault: vaults[i],
         asset,
         assetDecimals: Number(decimals[i]),
         balance: BigInt(balances[i] ? balances[i] : 0),
-        rateBefore: BigInt(ratesBefore[i] ? ratesBefore[i] : 0),
-        rateAfter: BigInt(ratesAfter[i] ? ratesAfter[i] : 0),
+        rateBefore: BigInt(ratesBefore[i] ? ratesBefore[i] : 0) * decimalAdjustment,
+        rateAfter: BigInt(ratesAfter[i] ? ratesAfter[i] : 0) * decimalAdjustment,
       })
     }
   }