Merge "[BR07.2] Redirect data saver switch to ConnectivityManager" into main am: 1b2856eef0 am: 67fa76d8f7

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2745114

Change-Id: Ic0d1a28d7a797727fcf68ef3e35f77e43450909c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>