fix(e2e): update transport configuration to support custom RPC URL

- Modified `fundAccount` and `getViemPublicClient` functions to utilize a custom RPC URL if provided, enhancing flexibility in network configurations.
- Cleaned up commented-out code in `runPkpSignTest` for clarity.

Author: Ansonhkg

e2e/artillery/src/processors/multi-endpoints.ts

@@ -113,7 +113,7 @@ export async function runPkpSignTest() {
       authContext: authContext,
       pubKey: state.masterAccount.pkp.publicKey,
       toSign: `Hello from Artillery! ${Date.now()}`, // Unique message per request
-      // userMaxPrice: await litClient
+      // userMaxPrice: 1000000000000000000n,
     });
 
     // Validate the result using Zod schema

e2e/src/helper/NetworkManager.ts

@@ -47,9 +47,15 @@ export const getViemPublicClient = async ({
   networkModule: any;
 }) => {
   const viemChainConfig = networkModule.getChainConfig();
+
+  const customRpcUrl = process.env['LIT_YELLOWSTONE_PRIVATE_RPC_URL'];
+  if (customRpcUrl) {
+    console.log(`🔧 Using custom E2E RPC URL: ${customRpcUrl}`);
+  }
+
   const publicClient = createPublicClient({
     chain: viemChainConfig,
-    transport: http(),
+    transport: customRpcUrl ? http(customRpcUrl) : http(),
   });
 
   return publicClient;

e2e/src/helper/fundAccount.ts

@@ -78,10 +78,15 @@ export const fundAccount = async (
     thenFundWith?: string;
   }
 ) => {
+  const customRpcUrl = process.env['LIT_YELLOWSTONE_PRIVATE_RPC_URL'];
+  if (customRpcUrl) {
+    console.log(`🔧 Using custom E2E RPC URL: ${customRpcUrl}`);
+  }
+
   // check account balance
   const publicClient = createPublicClient({
     chain: networkModule.getChainConfig(),
-    transport: http(networkModule.getChainConfig().rpcUrls.default.http[0]),
+    transport: http(customRpcUrl || networkModule.getChainConfig().rpcUrls.default.http[0]),
   });
 
   const balance = await publicClient.getBalance({
@@ -94,7 +99,7 @@ export const fundAccount = async (
 
     const walletClient = createWalletClient({
       account: sponsorAccount,
-      transport: http(networkModule.getChainConfig().rpcUrls.default.http[0]),
+      transport: http(customRpcUrl || networkModule.getChainConfig().rpcUrls.default.http[0]),
     });
 
     // Get the next managed nonce for this sponsor account