Merge "add a read only flag for demo" into main am: dddb3fa987

Original change: https://android-review.googlesource.com/c/platform/development/+/2752905

Change-Id: Id1b2f27a247752baac9408ab06fe66ec41651dbf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>