[2/n] Fix tests before adding modal permission check

Flag: com.android.window.flags.enable_modals_fullscreen_with_permission
Bug: 394714626
Test: atest NexusLauncherTests:com.android.quickstep.DesktopSystemShortcutTest
Test: atest NexusLauncherTests:com.android.quickstep.ExternalDisplaySystemShortcutTest

Change-Id: I74ad0ca6b089a790a8f84ee6ba735b9d01acdc2f
2 files changed