[SDK] Fix SIWE auth forcing unnecessary chain switch (#7104)

Author: joaquim-verges

.changeset/ten-parrots-poke.md

@@ -0,0 +1,5 @@
+---
+"thirdweb": patch
+---
+
+Fix siwe auth always forcing a switch chain call

packages/thirdweb/src/react/core/hooks/auth/useSiweAuth.ts

@@ -97,7 +97,7 @@ export function useSiweAuth(
         import("../../../../auth/core/sign-login-payload.js"),
       ]);
 
-      if (payload.chain_id) {
+      if (payload.chain_id && Number(payload.chain_id) !== chain.id) {
         await activeWallet.switchChain(
           getCachedChain(Number(payload.chain_id)),
         );