Make "the nuclear option" trigger the timer on damage instead of inst…

…antly exploding (#14)

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🆑 Simyon
- tweak: The nuclear option will now trigger the timer instead of
instantly exploding upon taking too much damage.

Resources/Prototypes/Entities/Objects/Weapons/Throwable/grenades.yml

@@ -293,9 +293,7 @@
         !type:DamageTrigger
         damage: 50
       behaviors:
-      - !type:TriggerBehavior
-      - !type:DoActsBehavior
-        acts: ["Destruction"]
+      - !type:TimerStartBehavior
   - type: Appearance
   - type: TimerTriggerVisuals
     primingSound: