Remove StartingWindow or cancel the request to add StartingWindow after all...

Remove StartingWindow or cancel the request to add StartingWindow after all activities have been drawn

In Embedded mode, all activities have already been drawn before the addition of StartingWindow is completed, then there is no suitable time to remove StartingWindow. So when all activities have been drawn but StartingWindow has not been successfully added, we need to cancel the request to add StartingWindow

Bug: 373802899

Change-Id: I4e98947ad305a3434ee22b12612b76f0e0578e96
Signed-off-by: wanghuadong <wanghuadong@xiaomi.corp-partner.google.com>