a2c45ae548 test: report failure during utf8 response decoding (furszy)
Pull request description:
Useful for debugging issues such https://github.com/bitcoin/bitcoin/pull/31241#issuecomment-2462816933.
Prints the entire response content instead of printing only the position of the byte it can't be decoded.
The diff between the error messages can be seen by running the `wallet_migration.py` functional test with the following patch applied:
```
diff --git a/src/wallet/rpc/wallet.cpp b/src/wallet/rpc/wallet.cpp
--- a/src/wallet/rpc/wallet.cpp(revision d65918c5da52c7d5035b4151dee9ffb2e94d4761)
+++ b/src/wallet/rpc/wallet.cpp(date 1731005254673)
@@ -801,7 +801,7 @@
}
UniValue r{UniValue::VOBJ};
- r.pushKV("wallet_name", res->wallet_name);
+ r.pushKV("wallet_name", "\xc3\x28");
if (res->watchonly_wallet) {
r.pushKV("watchonly_name", res->watchonly_wallet->GetName());
}
```
ACKs for top commit:
achow101:
ACK a2c45ae548
theStack:
re-ACK a2c45ae548
rkrux:
tACK a2c45ae548
ismaelsadeeq:
utACK a2c45ae548
Tree-SHA512: 6abb524b5a215c51ec881eea91ebe8174140a88ff3874c8c88676157edae7818801356586a904dbb21b45053183315a6d71dbf917d753611d8e413776b57c484
17db84dbb8