Big bug with CROW_BP_CATCHALL_ROUTE loses the request

[Robbivan]

There was a problem with getting a request in catchall_route
According to the library, such a lambda capture configuration is normal

CROW_BP_CATCHALL_ROUTE(m_bp_inner_example)
            ([&](const crow::request &req,
                 crow::response &res){...}

However, the request comes empty. A read error " from read(1)" is displayed from http_connection.h

void do_read()
{
...
          if (error_while_reading)
                  {
                      cancel_deadline_timer();
                      parser_.done();
                      adaptor_.shutdown_read();
                      adaptor_.close();
                      is_reading = false;
                      CROW_LOG_DEBUG << this << " from read(1) with description: \"" << http_errno_description(static_cast<http_errno>(parser_.http_errno)) << '\"';
                      check_destroy();
                  }
}

With a custom Crow Debug it looks like this
(2023-12-08 12:44:22) [DEBUG ] task_timer scheduled: 0x7f88923fe5f0 1
(2023-12-08 12:44:22) [DEBUG ] 0x5582c21ae990 timer added: 0x7f88923fe5f0 1
(2023-12-08 12:44:22) [DEBUG ] clear
(2023-12-08 12:44:22) [DEBUG ] length280
(2023-12-08 12:44:22) [DEBUG ] Cannot match rules /bp_prefix/bp2/wq.
(2023-12-08 12:44:22) [DEBUG ] length0
(2023-12-08 12:44:22) [INFO ] Response: 0x5582c21ae990 /bp_prefix/bp2/wq 200 0
(2023-12-08 12:44:22) [DEBUG ] 0x5582c21ae990 timer cancelled: 0x7f88923fe5f0 1
(2023-12-08 12:44:22) [DEBUG ] task_timer cancelled: 0x7f88923fe5f0 1
(2023-12-08 12:44:22) [DEBUG ] length0
(2023-12-08 12:44:22) [DEBUG ] 0x5582c21ae990 from read(1) with description: "stream ended at an unexpected time"
(2023-12-08 12:44:22) [DEBUG ] clear

As I understand it, initially the request comes normally with a length greater than 0, however, after a suitable BR_ROUTE is not found, the buffer with the request in parser.h is cleared,

from parser.h

 void clear()
        {
            url.clear();
            raw_url.clear();
            header_field.clear();
            header_value.clear();
            headers.clear();
            url_params.clear();
            body.clear();
            header_building_state = 0;
            qs_point = 0;
            http_major = 0;
            http_minor = 0;
            message_complete = false;
            state = CROW_NEW_MESSAGE();
            keep_alive = false;
            close_connection = false;
        }

and the url is saved and transferred to BP_CATCHALL. It is because of the buffer cleanup before sending to BP_CATCHALL that we do not receive our request, just a new empty one is created.

Please fix this bug! We are really waiting, there will be cool functionality