Update isZkSyncChain.ts

Author: jnsdls

packages/thirdweb/src/utils/any-evm/zksync/isZkSyncChain.ts

@@ -19,11 +19,13 @@ export async function isZkSyncChain(chain: Chain) {
   }
 
   // fallback to checking the stack on rpc
-  const stack = await getChainStack(chain.id).catch(() => {
-    // dont throw if network check fails
-    return "";
-  });
-
+  try {
+    const stack = await getChainStack(chain.id);
+    return stack === "zksync-stack";
+  } catch {
+    // If the network check fails, assume it's not a ZkSync chain
+    return false;
+  }
   return stack === "zksync-stack";
 }