Add learned profile name event.

app/src/main/protowire/Database.proto

@@ -73,6 +73,7 @@ message ProfileChangeDetails {
     }
 
     StringChange profileNameChange = 1;
+    StringChange learnedProfileName = 2;
 }
 
 message BodyRangeList {
@@ -379,6 +380,7 @@ message MessageExtras {
     oneof extra {
         GV2UpdateDescription gv2UpdateDescription = 1;
         signalservice.GroupContext gv1Context = 2;
+        ProfileChangeDetails profileChangeDetails = 3;
     }
 }