[php-src] Issue #7786: PHP 8.2: unexpected deprecation for dynamic property set via magic method

Issue: https://github.com/php/php-src/issues/7786 Author: jrfnl ### Description The following code: ```php <?php class Foo { public function __set( $name, $value ) { $this->$name = $value; } } $obj = new Foo(); $obj->test = 'test'; ``` Resulted in this output: ``` Deprecated: Creation of dynamic property Foo::$test is deprecated in /in/Ds0gN on line 5 ``` https://3v4l.org/Ds0gN/rfc#vgit.master But I expected this output instead: ``` No error ``` I realize that this is an "unconventional" interpretation of how magic methods should be implemented, but at the same time, the RFC explicitly excluded dynamic properties being set via magic methods from the deprecation, so I'd really like to invite some discussion on this. ### PHP Version 8.2/nightly ### Operating System _No response_