[IOS-6509] Fix chat settings header buttons not available for VoiceOver.

Signal/src/views/SettingsHeaderButton.swift

@@ -61,6 +61,7 @@ class SettingsHeaderButton: UIView {
         }
 
         // Accessibility
+        isAccessibilityElement = true
         accessibilityTraits = .button
         accessibilityLabel = title
     }
@@ -122,10 +123,6 @@ class SettingsHeaderButton: UIView {
 
     // MARK: Accessibility
 
-    override class func isAccessibilityElement() -> Bool {
-        true
-    }
-
     override func accessibilityActivate() -> Bool {
         if #available(iOS 17.4, *) {
             button.performPrimaryAction()