When device is in page-agnostic mode, it would be OEM unlocked and
filesystem will be different than production. Don't allow to turn
off developer options in that state.
Bug: 329657279
Bug: 295035851
Test: m Settings && adb install -r $ANDROID_PRODUCT_OUT/system_ext/priv-app/Settings/Settings.apk
Change-Id: I9b8a9dbaf8192bb3758c53501450eb45e2fe8d9c
When device enters page-agnostic mode using 16KB developer
options, show notification to user using boot receiver and service.
On clicked on notification, show detailed instructions on how to
get back to production mode. Removing OEM carrier unlock allowed
condition.
Bug: 295035851
Bug: 338139755
Bug: 302600682
Test: m Settings && adb install -r $ANDROID_PRODUCT_OUT/system_ext/priv-app/Settings/Settings.apk
Change-Id: Ib7a57af4c6151d2a8da1ec94130532d10b1679aa