Only set the vonr setting when sim state loaded

Bug: 299569758
Bug: 301525730
Test: 1. e911 is established successfully in the pin lock state when device restarts in 5GSA only network
2. Ensure the VoNR setting only be updated to modem when sim loaded

Change-Id: Id0bd0ac0916332a4f95a056de3c47acc888a9a20