Add tests for SA-CORE-2025-003

Tests passing.

One issue is that comments in the test refer to the gadget chain as "Drupal/FI1" but there's currently no such thing in https://github.com/ambionics/phpggc (a new PR may be opened for it soon though).

Small comments

If you are another contributor eager to jump in, please allow the previous poster(s) at least 48 hours to respond to feedback first, so they have the opportunity to finish what they started!

🐛 HookCollectorPass registers event listeners but they do not follow the required calling convention Active is removing ProceduralCall entirely.