Update the Speak answers back switch item.

ios/chrome/browser/ui/settings/voicesearch_collection_view_controller.mm

Index: ios/chrome/browser/ui/settings/voicesearch_collection_view_controller.mm
diff --git a/ios/chrome/browser/ui/settings/voicesearch_collection_view_controller.mm b/ios/chrome/browser/ui/settings/voicesearch_collection_view_controller.mm
index 34a660b714a07df7111da3f493e3e311dedd1d9e..78f4c451c95bcf8c6789fdf066ceeeb70b5abd72 100644
--- a/ios/chrome/browser/ui/settings/voicesearch_collection_view_controller.mm
+++ b/ios/chrome/browser/ui/settings/voicesearch_collection_view_controller.mm
@@ -237,6 +237,12 @@ typedef NS_ENUM(NSInteger, ItemType) {
   if (on != switchView.isOn) {
     [switchView setOn:on animated:YES];
   }
+  // Also update the switch item.
+  CollectionViewSwitchItem* switchItem =
+      base::mac::ObjCCastStrict<CollectionViewSwitchItem>(
+          [self.collectionViewModel itemAtIndexPath:switchPath]);
+  switchItem.enabled = enabled;
+  switchItem.on = on;
 
   [self reconfigureCellsForItems:modifiedItems];
 }