Merge "[mdns] fix the logic of finding the existing service" into main am: 4c0b2f6c63

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2968064

Change-Id: I6b672dc37d3b7c750d94ae1db6d214ebcc9e27d8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>