Revert "Change network management listener to outcome receiver" am: dd88b843c9 am: 8e73ae0adc am: c57c9477d9

Original change: https://android-review.googlesource.com/c/platform/frameworks/opt/net/ethernet/+/2030085

Change-Id: Ibfaa65b1baf1f3cc49a8b73830edee7f29e5557f
tree: 0aeb15ec0c54163cbe091fa00ec6be365d8e2d54
  1. service-t/
  2. tests/