Fix wait condition on quickswitch

The navbar vanishes and reappears during the transition. Wait until the navbar appears to consider the transition finished.

Bug: 219690120
Bug: 220083329
Test: atest WMShellFlickerTests
Change-Id: Ib4514872fa8e9c2eac4148095474d26255f4a712

tests/FlickerTests/src/com/android/server/wm/flicker/quickswitch/QuickSwitchBetweenTwoAppsBackTest.kt

@@ -104,6 +104,7 @@ open class QuickSwitchBetweenTwoAppsBackTest(private val testSpec: FlickerTestPa
 
                 wmHelper.waitForFullScreenApp(testApp1.component)
                 wmHelper.waitForAppTransitionIdle()
+                wmHelper.waitForNavBarStatusBarVisible()
             }
 
             teardown {

tests/FlickerTests/src/com/android/server/wm/flicker/quickswitch/QuickSwitchBetweenTwoAppsForwardTest.kt

@@ -116,12 +116,13 @@ open class QuickSwitchBetweenTwoAppsForwardTest(private val testSpec: FlickerTes
 
                 wmHelper.waitForFullScreenApp(testApp2.component)
                 wmHelper.waitForAppTransitionIdle()
+                wmHelper.waitForNavBarStatusBarVisible()
             }
 
             teardown {
                 test {
-                    testApp1.exit()
-                    testApp2.exit()
+                    testApp1.exit(wmHelper)
+                    testApp2.exit(wmHelper)
                 }
             }
         }

tests/FlickerTests/src/com/android/server/wm/flicker/quickswitch/QuickSwitchFromLauncherTest.kt

@@ -91,6 +91,7 @@ class QuickSwitchFromLauncherTest(private val testSpec: FlickerTestParameter) {
 
                 wmHelper.waitForFullScreenApp(testApp.component)
                 wmHelper.waitForAppTransitionIdle()
+                wmHelper.waitForNavBarStatusBarVisible()
             }
 
             teardown {