Disable the optimization mode preference if the app is not settable am:...

Disable the optimization mode preference if the app is not settable am: 5cd3a729 am: d056edc1 am: 55ef64a3

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/23235859



Change-Id: If5f5d1400b94e4fad239f8143fbaa87d54b55086
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>