Zend: Add zend_class_use_internal_traits() for internal classes

[khaledalam]

Description

Extensions can register internal classes, but currently there is no supported ZendAPI to apply Traits to those classes.

This PR introduces zend_class_use_traits() to allow internal classes to use Traits.

Fix #20974

[matyhtf]

@khaledalam This is fantastic, thank you for your work. Your efficiency is truly remarkable—new code commits in just a few hours. The support for trait features will help us utilize more advanced design patterns in extensions and break free from the limitations of single inheritance.

[iluuu1994]

While testing I noticed various things missing, and pushed the missing pieces. The test passes now.

Just out of interested, did you make the changes by hand or via AI?

[khaledalam]

While testing I noticed various things missing, and pushed the missing pieces. The test passes now.

Just out of interested, did you make the changes by hand or via AI?

Thanks for the fixes. I did the changes myself by hand, with some occasional AI help.

[khaledalam]

@khaledalam This is fantastic, thank you for your work. Your efficiency is truly remarkable—new code commits in just a few hours. The support for trait features will help us utilize more advanced design patterns in extensions and break free from the limitations of single inheritance.

Thanks, @matyhtf I appreciate it. And thank you for the thoughtful suggestion as well.

[iluuu1994]

Ah, the test immediately crashed in CI and on my machine, so I was wondering how most of your code works if you couldn't test it, but I realize now it didn't crash for you because you didn't use address sanitizer. Nice work!

You can use sanitizer with ./configure --enable-address-sanitizer and then run-tests.php --asan, it will make your life much easier.