Add missing check of avoidMoveToFront when starting activity

Otherwise if the task is still moved to top unexpectedly, the
surface visibility may not be consistent with its hierarchy order.

Note that when using 3rd party launcher as default home, it is
possible that home is the transient hide task. Then it should
still allow home to move to front. E.g. pressing home button
when recents animation is running.

Bug: 337995601
Test: A singleTask activity invokes
      startActivity or startActivityIfNeeded to start itself
      during swiping up to home. The end result should show
      home instead of black screen.
Test: atest Launcher3Tests: \
            TaplOpenCloseAllAppsTest#testAllAppsSwipeUpToWorkspace

Change-Id: I2a665ab3de7c8591a0cc0b528a9b892bd71e32a0