b/418204319 and b/418202128 Add a new test case for app and system dialog stay...

b/418204319 and b/418202128 Add a new test case for app and system dialog stay inside the parent app when the desktop app is moved

Test: USE_RBE=false atest WMShellFlickerTestsDesktopMode:com.android.wm.shell.flicker.appcompat.AppDialogStaysInsideDesktopAppFlickerTest -c (http://ab/I50100010442773990)
Test: USE_RBE=false atest WMShellFlickerTestsDesktopMode:com.android.wm.shell.flicker.appcompat.SystemDialogStaysInsideDesktopAppFlickerTest -c (http://ab/I34300010442661193)
Video: http://recall/-/e82MJzNNoJUtxZebB55cdm
Flag: EXEMPT add new test case
Bug: 418204319
Bug: 418202128
Change-Id: I4470f901286881985ab57fda134d40c7b731880b