Merge "Add more context in javadoc of setDataSaverEnabled" into main am: 9c8111dd3a am: b4ac080787

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2900568

Change-Id: Ie27926e75fcff43351a35222883cdc08cb5baf3c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>