Check for Service state (VoiceRegState) only before placing call over CS domain

Bug: 359081823
Flag: EXEMPT bugfix
Test: atest TeleServiceTests:NormalCallDomainSelectorTest
Test: Manually verified in VZ, JIO and TMO networks
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:41fa3d1e6357dd336315d5c6bb8a0ffce68628a4)
Merged-In: Ib91a6be06be8784c14880a539fb570064dffd199
Change-Id: Ib91a6be06be8784c14880a539fb570064dffd199
1 file changed