Fix android.server.wm.BackgroundActivityLaunchTest#testSecondActivityBlockedWhenBackgroundActivityLaunch Ensure that the current activity has opened before opening the next activity. Therefore, increase the delay before opening the next. Bug: 315171338 Change-Id: I6255dece728dc29cfc37565d09cd0990d54c82b9 Test: atest android.server.wm.BackgroundActivityLaunchTest#testBackgroundActivityBlockedInStartNextMatchingActivity