fix: new EvmClientFactory breaking SafeSignatureVerifier

For some reason the Safe provider didn't play nicely with the EIP1193
client and threw the following errors:

An unknown RPC error occurred.Details: request already sent
(operation="fetchRequest.send", code=UNSUPPORTED_OPERATION,
version=6.12.2)Version: [email protected]

This patch just goes back to the easy init method of providing an RPC
URL, to fix the issue.

Author: pheuberger

src/lib/safe-signature-verification/SafeSignatureVerifier.ts

@@ -1,13 +1,12 @@
 import Safe from "@safe-global/protocol-kit";
 import { getAddress, hashTypedData, type HashTypedDataParameters } from "viem";
 
-import { Eip1193Provider } from "ethers";
 import { EvmClientFactory } from "../../client/evmClient.js";
 
 export default abstract class SafeSignatureVerifier {
   protected chainId: number;
   protected safeAddress: `0x${string}`;
-  protected provider: Eip1193Provider;
+  protected rpcUrl: string;
 
   constructor(chainId: number, safeAddress: `0x${string}`) {
     const rpcUrl = EvmClientFactory.getFirstAvailableUrl(chainId);
@@ -17,7 +16,7 @@ export default abstract class SafeSignatureVerifier {
     }
     this.chainId = chainId;
     this.safeAddress = getAddress(safeAddress);
-    this.provider = EvmClientFactory.createEip1193Client(chainId);
+    this.rpcUrl = rpcUrl;
   }
 
   hashTypedData() {
@@ -38,7 +37,7 @@ export default abstract class SafeSignatureVerifier {
 
   async verify(signature: string): Promise<boolean> {
     const safe = await Safe.default.init({
-      provider: this.provider,
+      provider: this.rpcUrl,
       safeAddress: this.safeAddress,
     });