feat: increase support for evmChainIds in different types using ethers BigNumberish

Author: FedericoAmura

packages/automation/src/lib/utils/chain.ts

@@ -1,8 +1,15 @@
+import { ethers } from 'ethers';
+
 import { LIT_EVM_CHAINS } from '@lit-protocol/constants';
 
-export function getEvmChain(evmChainId: number) {
+export function getEvmChain(evmChainId: ethers.BigNumberish) {
+  const evmChainIdNumber = ethers.BigNumber.from(evmChainId).toNumber();
+  if (evmChainIdNumber === 0) {
+    throw new Error('EVM chainId cannot be 0');
+  }
+
   const chain = Object.values(LIT_EVM_CHAINS).find(
-    (chain) => chain.chainId === evmChainId
+    (chain) => chain.chainId === evmChainIdNumber
   );
   if (!chain) {
     throw new Error(`EVM chain with chainId ${evmChainId} not found`);