[php-src] Issue #10155: GMP Objects should disallow invoking constructor like other opaque objects

Issue: https://github.com/php/php-src/issues/10155 Author: Girgias ### Description The following code: ```php <?php var_dump(new GMP(6)); ``` Resulted in this output: ``` object(GMP)#5 (1) { ["num"]=> string(1) "0" } ``` But I expected this output instead: ``` Fatal error: Uncaught Error: Cannot directly construct GMP, use gmp_init() instead in /in/SdNJu:2 Stack trace: #0 {main} thrown in /in/SdNJu on line 2 ``` Which is in line with the behaviour of other opaque objects such as `XMLParser`: https://3v4l.org/SdNJu And this just made me spend 30 minutes trying to understand why I was not getting the correct results... ### PHP Version PHP 5.6-8.2 ### Operating System _No response_