Promote stable app launch tests to presubmit

These flaky tests have been stable for the past week and can be promoted

Test: atest FlickerTests:com.android.server.wm.flicker.close
Bug: 171049683
Bug: 171049760
Bug: 167521849
Change-Id: I8fb98f3c9a4866bd82e2e39fb90b861719401960