Don't show SIM selection and swap SIM for emergency calls.

TEST=TAP
Bug: 73012833,73718978
Test: TAP
PiperOrigin-RevId: 194110263
Change-Id: I54dbbaada89e4974030e0b3a397040d4d686bcae
diff --git a/java/com/android/incallui/CallButtonPresenter.java b/java/com/android/incallui/CallButtonPresenter.java
index a22a258..e30c70f 100644
--- a/java/com/android/incallui/CallButtonPresenter.java
+++ b/java/com/android/incallui/CallButtonPresenter.java
@@ -485,7 +485,8 @@
 
     otherAccount = TelecomUtil.getOtherAccount(getContext(), call.getAccountHandle());
     boolean showSwapSim =
-        otherAccount != null
+        !call.isEmergencyCall()
+            && otherAccount != null
             && !call.isVoiceMailNumber()
             && DialerCall.State.isDialing(call.getState())
             // Most devices cannot make calls on 2 SIMs at the same time.