LibWeb/IDB: Improve error messages related to transaction state

Author: https://github.com/stelar7
Commit: 0890b10d11
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4524
Reviewed-by: https://github.com/gmta ✅

Libraries/LibWeb/IndexedDB/IDBIndex.cpp

@@ -62,7 +62,7 @@ WebIDL::ExceptionOr<void> IDBIndex::set_name(String const& value)
 
     // 5. If transaction’s state is not active, then throw a "TransactionInactiveError" DOMException.
     if (transaction->state() != IDBTransaction::TransactionState::Active)
-        return WebIDL::TransactionInactiveError::create(realm, "Transaction is not active"_string);
+        return WebIDL::TransactionInactiveError::create(realm, "Transaction is not active while updating index name"_string);
 
     // FIXME: 6. If index or index’s object store has been deleted, throw an "InvalidStateError" DOMException.