DoAfter Refactor Fixes (#14278)

* Doafterfixes

* Injector blocker

Content.Shared/Chemistry/Components/SharedInjectorComponent.cs

@@ -10,6 +10,12 @@ namespace Content.Shared.Chemistry.Components
     [NetworkedComponent, ComponentProtoName("Injector")]
     public abstract class SharedInjectorComponent : Component
     {
+        /// <summary>
+        /// Checks to see if the entity being injected
+        /// </summary>
+        [DataField("isInjecting")]
+        public bool IsInjecting;
+
         /// <summary>
         /// Component data used for net updates. Used by client for item status ui
         /// </summary>