Merge "Insert downloaded file to MediaStore db only after Download is complete" into rvc-dev am: 805096693a am: 173b599c83

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/providers/DownloadProvider/+/11759899

Change-Id: I6718f1878b089ffb8396f6e4cdb89ae6c6bcf846