add IDisposable declaration to accompany existing Dispose() method

Oqtane.Client/Head.razor

@@ -1,6 +1,7 @@
 @using System.ComponentModel
 @using Oqtane.Shared
 @inject SiteState SiteState
+@implements IDisposable
 
 @if (!string.IsNullOrEmpty(_title))
 {

Oqtane.Client/Themes/Controls/Container/ModuleTitle.razor

@@ -4,6 +4,7 @@
 @attribute [OqtaneIgnore]
 @inject IStringLocalizer<SharedResources> SharedLocalizer
 @inject IStringLocalizerFactory LocalizerFactory
+@implements IDisposable
 
 <span class="app-moduletitle">
     @((MarkupString)title)

Oqtane.Client/UI/ContainerBuilder.razor

@@ -1,6 +1,7 @@
 @using System.ComponentModel
 @namespace Oqtane.UI
 @inject SiteState SiteState
+@implements IDisposable
 
 @if (ComponentType != null && _visible)
 {

Oqtane.Client/UI/SiteRouter.razor

@@ -13,6 +13,7 @@
 @inject ILogService LogService
 @inject IJSRuntime JSRuntime
 @implements IHandleAfterRender
+@implements IDisposable
 
 @if (!string.IsNullOrEmpty(_error))
 {