Wait until the nav and status bars are visible before launching the app

Currently, the test goes home after opening camera, and launches the next app before the status bar appears, making it flaky

Fixes: 327716272
Test: atest OpenAppFromIntentColdAfterCameraTest
Change-Id: I20fd043b2ea7ad989228ef83512b3ba262328159

tests/FlickerTests/AppLaunch/src/com/android/server/wm/flicker/launch/OpenAppFromIntentColdAfterCameraTest.kt

@@ -52,6 +52,7 @@ class OpenAppFromIntentColdAfterCameraTest(flicker: LegacyFlickerTest) :
                 // Can't use TAPL due to Recents not showing in 3 Button Nav in full screen mode
                 device.pressHome()
                 tapl.getWorkspace()
+                wmHelper.StateSyncBuilder().withHomeActivityVisible().waitForAndVerify()
             }
             teardown { testApp.exit(wmHelper) }
             transitions { testApp.launchViaIntent(wmHelper) }