Fixing time delay on launch on flag change. am: c069989503

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/DocumentsUI/+/26391392

Change-Id: Iff60142daf36c00ebc8c32c9b37ba20b164a2781
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>