Do not return duplicate contact uIDs because it will crash kdeconnectd on the desktop
Summary
Do not return duplicate contact uid's because it will crash kdeconnect-kde due to an assert in the contacts plugin
Test Plan
On my phone Android for some reason returns 2 contacts with the same "lookup" but with different "_id" fields
I have no idea how this got to be or how to reproduce the situation but it's probably because I have multiple contact books (private/work) and android is aggregating from apps like whatsapp/telegram etc.