[php-src] Issue #12380: JIT+Isset on a private property inside fiber accesses private property in child class

Issue: https://github.com/php/php-src/issues/12380 Author: danog ### Description The following code: >php -d opcache.enable_cli=1 -d opcache.jit=tracing -d opcache.jit_buffer_size=1G -d >opcache.jit_max_root_traces=1000000 -d opcache.jit_max_side_traces=1000000 -d >opcache.jit_max_exit_counters=1000000 -d opcache.jit_hot_loop=1 -d opcache.jit_hot_func=1 -d >opcache.jit_hot_return=1 -d opcache.jit_hot_side_exit=1 -d memory_limit=-1 a.php ```php <?php abstract class a { private array $v = []; public function __construct() { $this->v['a'] = 'test'; } public function test(): void { $f = new \Fiber(function (): void { if (!isset($this->v['a'])) { throw new AssertionError("Impossible"); } }); $f->start(); } } final class b extends a { private array $v = []; } $a = new b; for ($i = 0; $i < 30; $i++) { $a->test(); } ``` Resulted in this output: ``` PHP Fatal error: Uncaught AssertionError: Impossible in /home/daniil/repos/amp/a.php:16 Stack trace: #0 [internal function]: a->{closure}() #1 /home/daniil/repos/amp/a.php(19): Fiber->start() #2 /home/daniil/repos/amp/a.php(29): a->test() #3 {main} thrown in /home/daniil/repos/amp/a.php on line 16 ``` But I expected this output instead: ``` ``` This is the root cause of https://github.com/php/php-src/issues/12249 Ping @dstogov ### PHP Version 8.2.11 ### Operating System Arch linux