Fix scene selection state

Casa/ApiDocsView.swift

@@ -73,7 +73,7 @@ struct ApiDocsView: View {
             Text("Scene Filter")
                 .font(.headline)
             Picker("Scene", selection: $selectedSceneId) {
-                Text("All scenes").tag(Optional<UUID>.none)
+                Text("All scenes").tag(Optional(SceneSelection.allScenesId))
                 ForEach(scenes, id: \.uniqueIdentifier) { scene in
                     Text(scene.name).tag(Optional(scene.uniqueIdentifier))
                 }
@@ -89,7 +89,7 @@ struct ApiDocsView: View {
     }
 
     private var selectedScene: HMActionSet? {
-        guard let selectedSceneId else { return nil }
+        guard let selectedSceneId, selectedSceneId != SceneSelection.allScenesId else { return nil }
         return scenes.first { $0.uniqueIdentifier == selectedSceneId }
     }
 

Casa/CasaModels.swift

@@ -58,3 +58,7 @@ struct CasaScene {
     let type: String
     let isExecuting: Bool
 }
+
+enum SceneSelection {
+    static let allScenesId = UUID(uuidString: "00000000-0000-0000-0000-000000000001")!
+}

Casa/ContentView.swift

@@ -128,7 +128,6 @@ private enum MainSelection: Hashable {
 
 
 private struct SidebarView: View {
-    static let allScenesId = UUID(uuidString: "00000000-0000-0000-0000-000000000001")!
     @EnvironmentObject private var model: CasaAppModel
     @ObservedObject private var settings = CasaSettings.shared
     let accessories: [HMAccessory]
@@ -183,10 +182,10 @@ private struct SidebarView: View {
 
             Section("Scenes") {
                 Button {
-                    sceneSelection = SidebarView.allScenesId
+                    sceneSelection = SceneSelection.allScenesId
                     accessorySelection = nil
                 } label: {
-                    sidebarRow(title: "All scenes", isSelected: sceneSelection == SidebarView.allScenesId)
+                    sidebarRow(title: "All scenes", isSelected: sceneSelection == SceneSelection.allScenesId)
                 }
                 .buttonStyle(.plain)