Merge "Clear dns cache when restoring network access" into main am: 8cdacba76f

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2999816

Change-Id: I11a8a2763d60c3bc01acc3ca0a56a4b79552b61b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>