[iOS] Don't add OpenInNewTab animation on iPad

This CL don't trigger the new animation for OpenInNewTab when the
TabStrip is present as the TabStrip already have an animation.

Bug: none
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: I2cb7a5e67695b2249373a519e6521523dfa0354d
Reviewed-on: https://chromium-review.googlesource.com/1140159Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#575618}

ios/chrome/browser/ui/browser_view_controller.mm

@@ -4485,7 +4485,7 @@ applicationCommandEndpoint:(id<ApplicationCommands>)applicationCommandEndpoint {
                 inBackground:inBackground];
   };
 
-  if (!IsUIRefreshPhase1Enabled() || !inBackground ||
+  if (!IsUIRefreshPhase1Enabled() || !inBackground || [self canShowTabStrip] ||
       CGPointEqualToPoint(originPoint, CGPointZero)) {
     openTab();
   } else {