Generate content for pages with no visible children

Sources/Generator/Content/Element.swift

@@ -337,6 +337,10 @@ struct Element {
     var needsFirstSection: Bool {
         showMostRecentSection || !featuredPages.isEmpty
     }
+
+    var hasVisibleChildren: Bool {
+        !elements.filter { $0.state == .standard }.isEmpty
+    }
 }
 
 // MARK: Paths

Sources/Generator/Generators/SiteGenerator.swift

@@ -38,7 +38,7 @@ struct SiteGenerator {
             elementsToProcess.append(contentsOf: element.linkedElements)
 
             processAllFiles(for: element)
-            if !element.elements.isEmpty {
+            if element.hasVisibleChildren {
                 overviewGenerator.generate(section: element, language: language)
             } else {
                 pageGenerator.generate(