fix: setting switch use wrong tint color issue

Mastodon/Scene/Settings/Cell/SettingsToggleTableViewCell.swift

@@ -20,7 +20,6 @@ class SettingsToggleTableViewCell: UITableViewCell {
     
     private(set) lazy var switchButton: UISwitch = {
         let view = UISwitch(frame:.zero)
-        view.onTintColor = contentView.window?.tintColor ?? .label
         return view
     }()
     
@@ -49,8 +48,15 @@ class SettingsToggleTableViewCell: UITableViewCell {
         accessoryView = switchButton
         textLabel?.numberOfLines = 0
         
+        updateAppearance()
         switchButton.addTarget(self, action: #selector(switchValueDidChange(sender:)), for: .valueChanged)
     }
+    
+    override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
+        super.traitCollectionDidChange(previousTraitCollection)
+        
+        updateAppearance()
+    }
 
 }
 
@@ -72,4 +78,16 @@ extension SettingsToggleTableViewCell {
         switchButton.isOn = enabled ?? false
     }
     
+    private func updateAppearance() {
+        switchButton.onTintColor = {
+            switch traitCollection.userInterfaceStyle {
+            case .dark:
+                // set default green for Dark Mode
+                return nil
+            default:
+                // set tint black for Light Mode
+                return self.contentView.window?.tintColor ?? nil
+            }
+        }()
+    }
 }