further modifications for #4604 - support for site name in logo component

Oqtane.Client/Themes/Controls/Theme/Logo.razor

@@ -11,16 +11,16 @@
 }
 else
 {
-    if (ShowName)
+    if (UseSiteNameAsFallback)
     {
         <span class="app-logo">
-            <a class="site-name" href="@PageState.Alias.Path">@PageState.Site.Name</a>
+            <a class="navbar-brand" href="@PageState.Alias.Path">@PageState.Site.Name</a>
         </span>
     }
 }
 
 @code {
     [Parameter]
-    public bool ShowName { get; set; } = false;
+    public bool UseSiteNameAsFallback { get; set; } = false; // indicates if the site name should be displayed in scenarios where a site does not have a logo defined
 }