[GIT-PULLS] [php-src] PR #22637: Zend/zend_alloc: `abort()` instead of `exit()` on hard OOM

Pull Request: https://github.com/php/php-src/pull/22637
Author: realFlowControl

`zend_out_of_memory()` (raw `malloc`/`realloc` failure, not `memory_limit`) now calls `abort()` instead of `exit(1)`.

`exit()` gives no signal a crash handler can catch and produces no core dump. `abort()` raises `SIGABRT`, which a signal handler can intercept and create a crash report. Even without anything special, you may configure your OS to create a core file when a `SIGABRT` arrives.

This matches the existing `abort()` pattern already used by `zend_mm_panic()` for heap corruption. https://github.com/php/php-src/blob/edcd94d5816ac072f34cd3a93f59905575bbfe39/Zend/zend_alloc.c#L381-L392

Note: observed exit status changes from `1` to signal-terminated (`134`).