fulhade created an issue (kamailio/kamailio#4431)

Testing 6.0.3 noticed that log is filled with INFO log messages from title (every 5s). No errors in logs, usual stuff except info on tcpcon

``` Oct 12 00:40:24 kamailio[4350]: INFO: <core> [core/tcp_main.c:3124]: tcpconn_1st_send(): quick connect for 0x7f78f8c79b10 sock 38 Oct 12 22:42:26 kamailio[4355]: INFO: <core> [core/tcp_main.c:3124]: tcpconn_1st_send(): quick connect for 0x7f78f8c79b10 sock 32 ... Oct 13 07:42:12 kamailio[4355]: INFO: http_async_client [http_multi.c:88]: event_cb(): Cell for handler 0x7f78f8c79b10 not found in table Oct 13 07:42:17 kamailio[4355]: INFO: http_async_client [http_multi.c:88]: event_cb(): Cell for handler 0x7f78f8c79b10 not found in table Oct 13 07:42:22 kamailio[4355]: INFO: http_async_client [http_multi.c:88]: event_cb(): Cell for handler 0x7f78f8c79b10 not found in table Oct 13 07:42:27 kamailio[4355]: INFO: http_async_client [http_multi.c:88]: event_cb(): Cell for handler 0x7f78f8c79b10 not found in table Oct 13 07:42:32 kamailio[4355]: INFO: http_async_client [http_multi.c:88]: event_cb(): Cell for handler 0x7f78f8c79b10 not found in table Oct 13 07:42:37 kamailio[4355]: INFO: http_async_client [http_multi.c:88]: event_cb(): Cell for handler 0x7f78f8c79b10 not found in table ```

Using docker image built on trixie: https://pastebin.com/0wZ0X9wb

Not sure how to reproduce, it just appear on testing machine after couple of days.

Unfortunately we used 5.6.3 before this, so not sure when did it break for us. http_async_client usage:

``` $http_req(hdr) = "Content-Type: application/json"; $http_req(hdr) = "Expect: "; $http_req(body) = $dlg_var(http_body); http_async_query("${URL}/RoutingService/route", "ROUTING_RESPONSE"); ```

Memory looks fine, but one of four CPU core spike to 96%.

<img width="1119" height="955" alt="Image" src="https://github.com/user-attachments/assets/ffff8680-84ad-4866-9892-a6e6eefde780" />

core.tcp_info, mod.stats all shm, mod.stats all pkg https://pastebin.com/QLZ8mZdD