fix an nav bar issue

SessionUIKit/Style Guide/ThemeManager.swift

@@ -150,30 +150,6 @@ public enum ThemeManager {
         ThemeManager.mainWindow?.tintColor = textPrimary
         ThemeManager.mainWindow?.rootViewController?.setNeedsStatusBarAppearanceUpdate()
         
-        // Update the nav bars to use the right colours (we default to the 'primary' value)
-        UINavigationBar.appearance().barTintColor = ThemeManager.currentTheme.color(for: .backgroundPrimary)
-        UINavigationBar.appearance().isTranslucent = false
-        UINavigationBar.appearance().tintColor = textPrimary
-        UINavigationBar.appearance().shadowImage = ThemeManager.currentTheme.color(for: .backgroundPrimary)?.toImage()
-        UINavigationBar.appearance().titleTextAttributes = [
-            NSAttributedString.Key.foregroundColor: textPrimary
-        ]
-        UINavigationBar.appearance().largeTitleTextAttributes = [
-            NSAttributedString.Key.foregroundColor: textPrimary
-        ]
-        
-        // Update the bar button item appearance
-        UIBarButtonItem.appearance().tintColor = textPrimary
-
-        // Update toolbars to use the right colours
-        UIToolbar.appearance().barTintColor = ThemeManager.currentTheme.color(for: .backgroundPrimary)
-        UIToolbar.appearance().isTranslucent = false
-        UIToolbar.appearance().tintColor = textPrimary
-        
-        // Note: Looks like there were changes to the appearance behaviour in iOS 15, unfortunately
-        // this breaks parts of the old 'UINavigationBar.appearance()' logic so we need to do everything
-        // again using the new API...
-        if #available(iOS 15.0, *) {
         let appearance = UINavigationBarAppearance()
         appearance.configureWithOpaqueBackground()
         appearance.backgroundColor = ThemeManager.currentTheme.color(for: .backgroundPrimary)
@@ -195,9 +171,9 @@ public enum ThemeManager {
         appearance.backButtonAppearance = barButtonItemAppearance
         appearance.doneButtonAppearance = barButtonItemAppearance
         
+        UINavigationBar.appearance().isTranslucent = false
         UINavigationBar.appearance().standardAppearance = appearance
         UINavigationBar.appearance().scrollEdgeAppearance = appearance
-        }
         
         // Note: 'UINavigationBar.appearance' only affects newly created nav bars so we need
         // to force-update any current navigation bar (unfortunately the only way to do this
@@ -254,10 +230,6 @@ public enum ThemeManager {
         navController.navigationBar.barTintColor = ThemeManager.currentTheme.color(for: navigationBackground)
         navController.navigationBar.shadowImage = ThemeManager.currentTheme.color(for: navigationBackground)?.toImage()
         
-        // Note: Looks like there were changes to the appearance behaviour in iOS 15, unfortunately
-        // this breaks parts of the old 'UINavigationBar.appearance()' logic so we need to do everything
-        // again using the new API...
-        if #available(iOS 15.0, *) {
         let textPrimary: UIColor = (ThemeManager.currentTheme.color(for: .textPrimary) ?? .white)
         let appearance = UINavigationBarAppearance()
         appearance.configureWithOpaqueBackground()
@@ -273,7 +245,6 @@ public enum ThemeManager {
         navController.navigationBar.standardAppearance = appearance
         navController.navigationBar.scrollEdgeAppearance = appearance
     }
-    }
     
     private static func retrieveNavigationController(from viewController: UIViewController) -> UINavigationController? {
         switch viewController {