[php-src] Issue #10840: [PHP@master] Reflection method does not exist for private method from parent class

Issue: https://github.com/php/php-src/issues/10840 Author: kubawerlos ### Description The following code: ```php <?php class C1 { public function t1() {} } class C2 { protected function t2() {} } class C3 { private function t3() {} } $method = new \ReflectionMethod(new class extends C1 {}, 't1'); // this is fine $method = new \ReflectionMethod(new class extends C2 {}, 't2'); // this is fine $method = new \ReflectionMethod(new class extends C3 {}, 't3'); // Fatal error: Uncaught ReflectionException: Method C3@anonymous::t3() does not exist ``` Resulted in this output: ``` Fatal error: Uncaught ReflectionException: Method C3@anonymous::t3() does not exist in /in/bJ2af:9 Stack trace: #0 /in/bJ2af(9): ReflectionMethod->__construct(Object(C3@anonymous), 't3') #1 {main} thrown in /in/bJ2af on line 9 Process exited with code 255. ``` But I expected this output instead: ``` ``` It happens only on master branch, 8.2.3 is not affected. https://3v4l.org/bJ2af/rfc#vgit.master ### PHP Version master ### Operating System _No response_