Do not assume phone number in conversation.

Fixes #8813

src/org/thoughtcrime/securesms/ConversationListItem.java

@@ -200,7 +200,7 @@ public class ConversationListItem extends RelativeLayout
     String name = recipient.isLocalNumber() ? getContext().getString(R.string.note_to_self) : recipient.getName();
 
     fromView.setText(SearchUtil.getHighlightedSpan(locale, () -> new StyleSpan(Typeface.BOLD), name, highlightSubstring));
-    subjectView.setText(SearchUtil.getHighlightedSpan(locale, () -> new StyleSpan(Typeface.BOLD), contact.getAddress().toPhoneString(), highlightSubstring));
+    subjectView.setText(SearchUtil.getHighlightedSpan(locale, () -> new StyleSpan(Typeface.BOLD), contact.getAddress().toString(), highlightSubstring));
     dateView.setText("");
     archivedView.setVisibility(GONE);
     unreadIndicator.setVisibility(GONE);

src/org/thoughtcrime/securesms/database/Address.java

@@ -126,17 +126,21 @@ public class Address implements Parcelable, Comparable<Address> {
   }
 
   public @NonNull String toGroupString() {
-    if (!isGroup()) throw new AssertionError("Not group: " + address);
+    if (!isGroup()) throw new AssertionError("Not group");
     return address;
   }
 
   public @NonNull String toPhoneString() {
-    if (!isPhone()) throw new AssertionError("Not e164: " + address);
+    if (!isPhone()) {
+      if (isEmail()) throw new AssertionError("Not e164, is email");
+      if (isGroup()) throw new AssertionError("Not e164, is group");
+      throw new AssertionError("Not e164, unknown");
+    }
     return address;
   }
 
   public @NonNull String toEmailString() {
-    if (!isEmail()) throw new AssertionError("Not email: " + address);
+    if (!isEmail()) throw new AssertionError("Not email");
     return address;
   }