fix(Core/DynamicObject): Fix Death and Decay not ticking while stationary (#24205)

Co-authored-by: blinkysc <37940565+blinkysc@users.noreply.github.com>

src/server/game/Entities/DynamicObject/DynamicObject.h

@@ -62,6 +62,8 @@ public:
 
     ObjectGuid const& GetOldFarsightGUID() const { return _oldFarsightGUID; }
 
+    bool IsUpdateNeeded() override;
+
 protected:
     Aura* _aura;
     Aura* _removedAura;