onepad: fix a pad regression on odin sphere

plugins/onepad/state_management.cpp

@@ -195,8 +195,9 @@ u8 pad_poll(u8 value)
                 if (pad->config) {
                     // In config mode.  Might not actually be leaving it.
                     query.set_result(ConfigExit);
+                    return 0xF3;
                 }
-                break;
+            // fallthrough on purpose (but I don't know why)
 
             case CMD_READ_DATA_AND_VIBRATE: {
                 query.response[2] = 0x5A;