[php-src] Issue #12450: curl send request twice

Issue: https://github.com/php/php-src/issues/12450 Author: dmitryvakulenko ### Description When curl send two requests and second one closing by timeout, curl reconnect and send it one more times. This happend only if CURLOPT_CUSTOMREQUEST was used. Client code: ```php <?php declare(strict_types=1); $ch = curl_init(); curl_setopt($ch, CURLOPT_HEADER, false); curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST"); curl_setopt($ch, CURLOPT_URL, "http://localhost"); curl_exec($ch); curl_setopt($ch, CURLOPT_URL, "http://localhost"); curl_exec($ch); curl_close($ch); ``` Server code written on Go 1.21: ```go package main import ( "log" "net/http" "time" ) type Handler struct { amount int } func (p *Handler) ServeHTTP(respw http.ResponseWriter, req *http.Request) { log.Printf("Got %s request %v from %s\n", req.Method, req.URL.String(), req.RemoteAddr) p.amount += 1 if p.amount == 2 { time.Sleep(time.Second * 5) } return } func main() { h := Handler{} srv := http.Server{ Addr: ":80", Handler: &h, ReadTimeout: 2 * time.Second, WriteTimeout: 2 * time.Second, } srv.ListenAndServe() } ``` Resulted in this output: ``` 2023/10/16 14:04:19 Got POST request / from 172.18.0.12:35374 2023/10/16 14:04:19 Got POST request / from 172.18.0.12:35374 2023/10/16 14:04:24 Got POST request / from 172.18.0.12:47144 ``` But I expected this output instead: ``` 2023/10/16 14:04:19 Got POST request / from 172.18.0.12:35374 2023/10/16 14:04:19 Got POST request / from 172.18.0.12:35374 ``` ### PHP Version php 7.4-8.1 ### Operating System Ubuntu 20.04, Alpine 3.11.3