Give vox health regen for poison below 20 damage (#33722)

(cherry picked from commit dc8b859916a4718d8b487b63b495cdaab121b138)

Resources/Prototypes/Entities/Mobs/Species/vox.yml

@@ -32,6 +32,18 @@
   - type: Damageable
     damageContainer: Biological
     damageModifierSet: Vox
+  - type: PassiveDamage
+    # Augment normal health regen to be able to tank some Poison damage
+    # This allows Vox to take their mask off temporarily to eat something without needing a trip to medbay afterwards.
+    allowedStates:
+    - Alive
+    damageCap: 20
+    damage:
+      types:
+        Heat: -0.07
+        Poison: -0.2
+      groups:
+        Brute: -0.07
   - type: DamageVisuals
     damageOverlayGroups:
       Brute: