[ios] Use a variable cell height for the password details URL.

BUG=865292

Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: Ia654723c1fa870921658fa2d53bc77114627fcd2
Reviewed-on: https://chromium-review.googlesource.com/1167112Reviewed-by: Sergio Collazos <sczs@chromium.org>
Commit-Queue: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581722}

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

@@ -634,6 +634,7 @@ reauthenticationModule:(id<ReauthenticationProtocol>)reauthenticationModule {
   CollectionViewItem* item =
       [self.collectionViewModel itemAtIndexPath:indexPath];
   switch (item.type) {
+    case ItemTypeSite:
     case ItemTypeUsername:
     case ItemTypePassword:
       return [MDCCollectionViewCell