Defer transition ready when resizing starting window.

Reset the StartingData.mIsDisplayed if the starting window is going
to resizing, so the transition won't happens with no opening windows
drawn.

Bug: 276356396
Test: atest QuickSwitchFromLauncherTest
Test: manual do quick switch 50+ without seeing flikcer.
Change-Id: I1b77c8238ec5a2b9a04c2cf779b49790f5203ce5
(cherry picked from commit d368f226)