[php-src] Issue #12298: Timer leaks on pcntl_fork in ZTS build

Issue: https://github.com/php/php-src/issues/12298 Author: bwoebi ### Description The following code: ```php <?php pcntl_fork(); ``` Resulted in this output (in child process): ``` ================================================================= ==58097==ERROR: LeakSanitizer: detected memory leaks Direct leak of 8 byte(s) in 1 object(s) allocated from: #0 0xffffa37f943b in malloc (/usr/lib/aarch64-linux-gnu/libasan.so.5+0xcf43b) #1 0xffffa3622aaf in timer_create ../sysdeps/unix/sysv/linux/timer_create.c:59 #2 0xaaaacd663a6b in zend_max_execution_timer_init /usr/local/src/php/Zend/zend_max_execution_timer.c:46 #3 0xaaaacd2913c7 in init_executor /usr/local/src/php/Zend/zend_execute_API.c:202 #4 0xaaaacd2e3497 in zend_activate /usr/local/src/php/Zend/zend.c:1257 #5 0xaaaacd0b09c3 in php_request_startup /usr/local/src/php/main/main.c:1758 #6 0xaaaacd7b92db in do_cli /usr/local/src/php/sapi/cli/php_cli.c:934 #7 0xaaaacd7bbd57 in main /usr/local/src/php/sapi/cli/php_cli.c:1340 #8 0xffffa08c7da3 in __libc_start_main ../csu/libc-start.c:308 #9 0xaaaacbea50f3 (/opt/php/debug-zts-asan/bin/php+0x5b50f3) ``` There's an explicit comment that this shouldn't be freed after a fork: ``` void zend_max_execution_timer_shutdown(void) /* {{{ */ { /* Don't try to delete a timer created before a call to fork() */ if (EG(pid) != getpid()) { return; } ``` So paging @dunglas who wrote that comment. ### PHP Version PHP 8.3 ### Operating System _No response_