feat(throwing): add Raptor & StoneSlith to the Reptilian slayer group

Register both creatures in the ReptilianDeath super-slayer list so reptile
slayer weapons deal the correct bonus damage against them (they're reptiles).
No dedicated lesser slayer applies, so they belong only to the super entry.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Projects/UOContent/Items/Weapons/SlayerGroup.cs

@@ -342,6 +342,7 @@ namespace Server.Items
                 typeof(OphidianMage),
                 typeof(OphidianMatriarch),
                 typeof(OphidianWarrior),
+                typeof(Raptor),
                 typeof(Reptalon),
                 typeof(SeaSerpent),
                 typeof(Serado),
@@ -350,6 +351,7 @@ namespace Server.Items
                 typeof(SilverSerpent),
                 typeof(SkeletalDragon),
                 typeof(Snake),
+                typeof(StoneSlith),
                 typeof(SwampDragon),
                 typeof(WhiteWyrm),
                 typeof(Wyvern),