Force update orientation handler for initial recents view state.

Force execute updateSizeAndPadding at onGestureAnimationStart to ensure
there has computed the initial task size even if orientation didn't
changed.

Bug: 228565696
Test: run "atest NexusLauncherTests" on tablet device.
Change-Id: I175754a68e91039dffdfd4035414885417882a07
1 file changed