[Fix] Incorrect casts in the legacy component builder (#3167)

* [Fix] Incorrect casts in the legacy component builder

* cringe

Author: Misha-133

src/Discord.Net.Core/Entities/Interactions/MessageComponents/Builders/ComponentBuilder.cs

@@ -87,7 +87,7 @@ internal void AddComponent(IMessageComponent component, int row)
     /// <returns>The current builder.</returns>
     public ComponentBuilder RemoveComponentsOfType(ComponentType t)
     {
-        this.ActionRows.ForEach(ar => ar.Components.RemoveAll(c => c.Type == t));
+        ActionRows.ForEach(ar => ar.Components.RemoveAll(c => c.Type == t));
         return this;
     }
 
@@ -98,7 +98,7 @@ public ComponentBuilder RemoveComponentsOfType(ComponentType t)
     /// <returns>The current builder.</returns>
     public ComponentBuilder RemoveComponent(string customId)
     {
-        this.ActionRows.ForEach(ar => ar.Components.RemoveAll(c => c is IInteractableComponent i && i.CustomId == customId));
+        ActionRows.ForEach(ar => ar.Components.RemoveAll(c => c is IInteractableComponentBuilder i && i.CustomId == customId));
         return this;
     }
 
@@ -109,7 +109,7 @@ public ComponentBuilder RemoveComponent(string customId)
     /// <returns>The current builder.</returns>
     public ComponentBuilder RemoveButtonByURL(string url)
     {
-        this.ActionRows.ForEach(ar => ar.Components.RemoveAll(c => c is ButtonComponent b && b.Url == url));
+        ActionRows.ForEach(ar => ar.Components.RemoveAll(c => c is ButtonBuilder b && b.Url == url));
         return this;
     }
 
@@ -319,7 +319,7 @@ public MessageComponent Build()
                     _actionRows.RemoveAt(i);
 
         return _actionRows != null
-            ? new MessageComponent(_actionRows.Select(x => x.Build()).OfType<IMessageComponent>().ToList())
+            ? new MessageComponent(_actionRows.Select(IMessageComponent (x) => x.Build()).ToList())
             : MessageComponent.Empty;
     }
 }