Pass correct group member suggestion to IME

So the member suggestion will work in the extracted mode too.

Bug 5075514

Change-Id: Ica1ec6295f65b15ba2486bc7b05c2138d15a2408
diff --git a/src/com/android/contacts/group/SuggestedMemberListAdapter.java b/src/com/android/contacts/group/SuggestedMemberListAdapter.java
index 4f4413c..66a8d09 100644
--- a/src/com/android/contacts/group/SuggestedMemberListAdapter.java
+++ b/src/com/android/contacts/group/SuggestedMemberListAdapter.java
@@ -355,5 +355,10 @@
         public void setPhotoByteArray(byte[] photo) {
             mPhoto = photo;
         }
+
+        @Override
+        public String toString() {
+            return getDisplayName();
+        }
     }
 }