update: clear mxid when request isn't authenticated

• update: clear mxid when request isn't authenticated

src/main/java/org/eclipsefoundation/profile/response/ProfileFilter.java

@@ -40,6 +40,7 @@ public class ProfileFilter {
                     .setEntity(profile
                             .toBuilder()
                             .setMail("")
+                            .setMxid("")
                             .setCountry(Country.builder().setCode(null).setName(null).build())
                             .setPublicFields(Collections.emptyList())
                             .setMailAlternate(Collections.emptyList())