[Examples] Declare store as static to avoid interference with Xcode previews (#3618)

* Voice Memos update:  declare store as static to avoid interference with Xcode previews

* Todos update:  declare store as static to avoid interference with Xcode previews

* SpeechRecognition update:  declare store as static to avoid interference with Xcode previews

* Search update:  declare store as static to avoid interference with Xcode previews

* remove: remove @mainactor, if isTesting

* [SyncUps] remove @mainactor

* Apply suggestions from code review

* fix method name

---------

Co-authored-by: Stephen Celis <[email protected]>

Author: meltsplit

Examples/Search/Search/SearchApp.swift

@@ -3,14 +3,14 @@ import SwiftUI
 
 @main
 struct SearchApp: App {
+  static let store = Store(initialState: Search.State()) {
+    Search()
+      ._printChanges()
+  }
+  
   var body: some Scene {
     WindowGroup {
-      SearchView(
-        store: Store(initialState: Search.State()) {
-          Search()
-            ._printChanges()
-        }
-      )
+      SearchView(store: Self.store)
     }
   }
 }

Examples/SpeechRecognition/SpeechRecognition/SpeechRecognitionApp.swift

@@ -3,13 +3,14 @@ import SwiftUI
 
 @main
 struct SpeechRecognitionApp: App {
+  static let store = Store(initialState: SpeechRecognition.State()) {
+    SpeechRecognition()
+      ._printChanges()
+  }
+  
   var body: some Scene {
     WindowGroup {
-      SpeechRecognitionView(
-        store: Store(initialState: SpeechRecognition.State()) {
-          SpeechRecognition()._printChanges()
-        }
-      )
+      SpeechRecognitionView(store: Self.store)
     }
   }
 }

Examples/SyncUps/SyncUps/App.swift

@@ -5,7 +5,6 @@ import SwiftUI
 struct SyncUpsApp: App {
   // NB: This is static to avoid interference with Xcode previews, which create this entry
   //     point each time they are run.
-  @MainActor
   static let store = Store(initialState: AppFeature.State()) {
     AppFeature()
       ._printChanges()

Examples/Todos/Todos/TodosApp.swift

@@ -3,13 +3,14 @@ import SwiftUI
 
 @main
 struct TodosApp: App {
+  static let store = Store(initialState: Todos.State()) {
+    Todos()
+      ._printChanges()
+  }
+  
   var body: some Scene {
     WindowGroup {
-      AppView(
-        store: Store(initialState: Todos.State()) {
-          Todos()
-        }
-      )
+      AppView(store: Self.store)
     }
   }
 }

Examples/VoiceMemos/VoiceMemos/VoiceMemosApp.swift

@@ -3,13 +3,14 @@ import SwiftUI
 
 @main
 struct VoiceMemosApp: App {
+  static let store = Store(initialState: VoiceMemos.State()) {
+    VoiceMemos()
+      ._printChanges()
+  }
+  
   var body: some Scene {
     WindowGroup {
-      VoiceMemosView(
-        store: Store(initialState: VoiceMemos.State()) {
-          VoiceMemos()._printChanges()
-        }
-      )
+      VoiceMemosView(store: Self.store)
     }
   }
 }