Fix bug where you couldn't add new raw phone numbers to groups.

app/src/main/java/org/thoughtcrime/securesms/contacts/paged/ContactSearchRepository.kt

@@ -20,6 +20,7 @@ class ContactSearchRepository {
       contactSearchKeys.map {
         val isSelectable = when (it) {
           is ContactSearchKey.RecipientSearchKey -> canSelectRecipient(it.recipientId)
+          is ContactSearchKey.UnknownRecipientKey -> it.sectionKey == ContactSearchConfiguration.SectionKey.PHONE_NUMBER
           else -> false
         }
         ContactSearchSelectionResult(it, isSelectable)