Fix memory leak with IOptionsMonitor.OnChange and non-singleton registered components (closes #20709 for 16/17) (#20723)

* Fix memory leak with IOptionsMonitor.OnChange and non-singleton registered components.

* Dispose disposable data editors in ValueEditorCache.

* Removed unnecessary refactoring and clarified code comments.

src/Umbraco.Core/Cache/ValueEditorCache.cs

@@ -51,7 +51,15 @@ public class ValueEditorCache : IValueEditorCache
             {
                 foreach (Dictionary<int, IDataValueEditor> editors in _valueEditorCache.Values)
                 {
-                    editors.Remove(id);
+                    if (editors.TryGetValue(id, out IDataValueEditor? editor))
+                    {
+                        if (editor is IDisposable disposable)
+                        {
+                            disposable.Dispose();
+                        }
+
+                        editors.Remove(id);
+                    }
                 }
             }
         }

src/Umbraco.Core/DeliveryApi/ApiPublishedContentCache.cs

@@ -1,10 +1,7 @@
-using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
 using Umbraco.Cms.Core.Configuration.Models;
-using Umbraco.Cms.Core.DependencyInjection;
 using Umbraco.Cms.Core.Models.PublishedContent;
 using Umbraco.Cms.Core.PublishedCache;
-using Umbraco.Cms.Core.Services;
 using Umbraco.Extensions;
 
 namespace Umbraco.Cms.Core.DeliveryApi;