Fix issue where conversations started on linked devices didn't show a phone number.

libsignal/service/src/main/java/org/whispersystems/signalservice/api/SignalServiceMessageSender.java

@@ -1157,6 +1157,9 @@ public class SignalServiceMessageSender {
 
     if (recipient.isPresent()) {
       sentMessage.setDestinationUuid(recipient.get().getServiceId().toString());
+      if (recipient.get().getNumber().isPresent()) {
+        sentMessage.setDestinationE164(recipient.get().getNumber().get());
+      }
     }
 
     if (dataMessage != null) {

libsignal/service/src/main/java/org/whispersystems/signalservice/api/messages/SignalServiceContent.java

@@ -674,7 +674,7 @@ public final class SignalServiceContent {
       Optional<SignalServiceDataMessage>      dataMessage          = sentContent.hasMessage() ? Optional.of(createSignalServiceMessage(metadata, sentContent.getMessage())) : Optional.empty();
       Optional<SignalServiceStoryMessage>     storyMessage         = sentContent.hasStoryMessage() ? Optional.of(createStoryMessage(sentContent.getStoryMessage())) : Optional.empty();
       Optional<SignalServiceAddress>          address              = SignalServiceAddress.isValidAddress(sentContent.getDestinationUuid())
-                                                                     ? Optional.of(new SignalServiceAddress(ServiceId.parseOrThrow(sentContent.getDestinationUuid())))
+                                                                     ? Optional.of(new SignalServiceAddress(ServiceId.parseOrThrow(sentContent.getDestinationUuid()), sentContent.getDestinationE164()))
                                                                      : Optional.empty();
       Set<SignalServiceStoryMessageRecipient> recipientManifest    = sentContent.getStoryMessageRecipientsList()
                                                                                 .stream()

libsignal/service/src/main/java/org/whispersystems/signalservice/api/push/SignalServiceAddress.java

@@ -34,7 +34,8 @@ public class SignalServiceAddress {
     this.e164      = e164;
   }
 
-  @SuppressWarnings("NewApi") public SignalServiceAddress(ServiceId serviceId) {
+  @SuppressWarnings("NewApi")
+  public SignalServiceAddress(ServiceId serviceId) {
     this.serviceId = Preconditions.checkNotNull(serviceId);
     this.e164      = Optional.empty();
   }

libsignal/service/src/main/proto/SignalService.proto

@@ -433,7 +433,7 @@ message SyncMessage {
       optional bool   isAllowedToReply    = 3;
     }
 
-    reserved                          /*destinationE164*/          1;
+    optional string                     destinationE164          = 1;
     optional string                     destinationUuid          = 7;
     optional uint64                     timestamp                = 2;
     optional DataMessage                message                  = 3;