Fix UseDelayComponent (#546)

Currently if this component is present the delay timer is started but it doesn't actually prevent use interactions.

To test this bug, do the following:
1. Set the delay for [bike_horn](https://github.com/space-wizards/space-station-14/blob/master/Resources/Prototypes/Entities/items/bike_horn.yml#L25) to something large like 5.0 that'll make the effect obvious
2. Use the bike horn with the z key. The delay anim will play properly but you'll still be able to spam the honk.

Content.Server/GameObjects/EntitySystems/Click/InteractionSystem.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Linq;
 using Content.Server.GameObjects.Components.Mobs;
 using Content.Server.GameObjects.Components.Timing;
@@ -564,6 +564,9 @@ namespace Content.Server.GameObjects.EntitySystems
 
             if (used.TryGetComponent<UseDelayComponent>(out var delayComponent))
             {
+                if(delayComponent.ActiveDelay)
+                    return;
+                else
                     delayComponent.BeginDelay();
             }