[GIT-PULLS] [php-src] PR #23432: ext/standard: declare true as the return type of register_tick_function()

Pull Request: https://github.com/php/php-src/pull/23432
Author: lacatoire

`register_tick_function()` is declared `bool` but has no failure path beyond the ZPP step, which throws. `php_add_tick_function()` and `zend_llist_add_element()` are both `void`, so no status is being dropped. `true` is the only value ever returned.

`unregister_tick_function()` is already `void`, and `ksort()`, `asort()`, and `natsort()` in the same stub already declare `true`, so this follows existing practice.

Changes: `basic_functions.stub.php` (`bool` → `true`), regenerated arginfo, added test.