[Settings] eSIM existance detection rule change

1. eSIM retrieved from SubscriptionManager#getAvailableSubscriptionInfoList()
should be considered as existed all the time.

2. When SIM are both inactive(or active), sorted the ordering based on ordering provided by telephony framework.

Bug: 195090132
Bug: 195091953
Test: local
Change-Id: I2fe43a35e5b7965bde3b579e2297e9cdd89ec228