Remove specific button state enums as they were overkill

Multiplatform/Shared/Article/ArticleExtractorButtonState.swift

@@ -8,16 +8,6 @@
 
 import Foundation
 
-enum ArticleReadButtonState {
-	case on
-	case off
-}
-
-enum ArticleStarButtonState {
-	case on
-	case off
-}
-
 enum ArticleExtractorButtonState {
 	case error
 	case animated

Multiplatform/Shared/SceneModel.swift

@@ -16,8 +16,8 @@ final class SceneModel: ObservableObject {
 	
 	@Published var refreshProgressState = RefreshProgressModel.State.none
 
-	@Published var readButtonState: ArticleReadButtonState?
-	@Published var starButtonState: ArticleStarButtonState?	
+	@Published var readButtonState: Bool?
+	@Published var starButtonState: Bool?
 
 	private var refreshProgressModel: RefreshProgressModel? = nil
 	private var articleIconSchemeHandler: ArticleIconSchemeHandler? = nil
@@ -121,17 +121,17 @@ private extension SceneModel {
 		}
 		
 		if articles.anyArticleIsUnread() {
-			readButtonState = .on
+			readButtonState = true
 		} else if articles.anyArticleIsReadAndCanMarkUnread() {
-			readButtonState = .off
+			readButtonState = false
 		} else {
 			readButtonState = nil
 		}
 		
 		if articles.anyArticleIsUnstarred() {
-			starButtonState = .off
+			starButtonState = false
 		} else {
-			starButtonState = .on
+			starButtonState = true
 		}
 	}
 

Multiplatform/Shared/SceneNavigationView.swift

@@ -99,25 +99,25 @@ struct SceneNavigationView: View {
 			}
 			ToolbarItem {
 				Button(action: { sceneModel.toggleReadStatusForSelectedArticles() }, label: {
-					if sceneModel.readButtonState == .on {
+					if sceneModel.readButtonState ?? false {
 						AppAssets.readClosedImage
 					} else {
 						AppAssets.readOpenImage
 					}
 				})
 				.disabled(sceneModel.readButtonState == nil ? true : false)
-				.help(sceneModel.readButtonState == .on ? "Mark as Unread" : "Mark as Read")
+				.help(sceneModel.readButtonState ?? false ? "Mark as Unread" : "Mark as Read")
 			}
 			ToolbarItem {
 				Button(action: { sceneModel.toggleStarredStatusForSelectedArticles() }, label: {
-					if sceneModel.starButtonState == .on {
+					if sceneModel.starButtonState ?? false {
 						AppAssets.starClosedImage
 					} else {
 						AppAssets.starOpenImage
 					}
 				})
 				.disabled(sceneModel.starButtonState == nil ? true : false)
-				.help(sceneModel.starButtonState == .on ? "Mark as Unstarred" : "Mark as Starred")
+				.help(sceneModel.starButtonState ?? false ? "Mark as Unstarred" : "Mark as Starred")
 			}
 			ToolbarItem {
 				Button(action: {}, label: {