Merge "[Thread] add CTS tests for ThreadNetworkException" into main am: 2fe1db6e49

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2949385

Change-Id: I940c62c71eaec045b8f2e6d07c655966cf6316a0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>