[BUG] -mastyx creatures in Daemonheim do not give Hunter experience when trapped, and do not drop hides when killed directly

[DarkShinyLugia]

Describe the bug
The dinosaur creatures inside Daemonheim do not drop anything when killed, even though they should drop exactly one of their corresponding leather and one set of Big Bones. They lack a death animation as well.

In addition, when trapping one of them using a fletching/hunter trap, you will be able to carve the corpse as expected, but zero Hunter experience is given for doing this.

To Reproduce
Steps to reproduce the behavior:

1. Go to Daemonheim
2. Kill a dinosaur
3. Dinosaur disappears with no death animation, doesn't drop anything
4. Trap dinosaurs until one of them is caught
5. Carve it, loot is obtained but no EXP is given

Expected behavior
Killing dinosaurs on this version of RuneScape should still give you bones/leather, and traps should always provide Hunter experience

Additional context
The strange behavior (not dropping anything on death and having no death animation) could be due to a patch released in 2023 that made these creatures unkillable to force players to use the trapping system. The lack of EXP on trapping is less explicable, though