fix: include first mapping entry in lookup

src/transport/raweth/tx.c

@@ -37,7 +37,7 @@ static void _zp_raweth_unlock_tx_mutex(_z_transport_multicast_t *ztm) { _ZP_UNUS
 #endif
 
 static int _zp_raweth_find_map_entry(const _z_keyexpr_t *keyexpr, _z_raweth_socket_t *sock) {
-    for (int i = 1; i < _zp_raweth_mapping_array_len(&sock->_mapping); i++) {
+    for (int i = 0; i < _zp_raweth_mapping_array_len(&sock->_mapping); i++) {
         // Find matching keyexpr
         _zp_raweth_mapping_entry_t *entry = _zp_raweth_mapping_array_get(&sock->_mapping, i);
         if (zp_keyexpr_intersect_null_terminated(keyexpr->_suffix, entry->_keyexpr._suffix) != _Z_RES_OK) {