chore: if originalSent doesn't have tokens, don't include it in representations list because related token events cannot be sent to it

lib/pangea/events/event_wrappers/pangea_message_event.dart

@@ -396,7 +396,15 @@ class PangeaMessageEvent {
             ),
           );
         }
-        _representations!.add(sent);
+
+        // If originalSent has no tokens, there is not way to generate a tokens event
+        // and send it as a related event, since original sent has not eventID to set
+        // as parentEventId. In this case, it's better to generate a new representation
+        // with an eventID and send the related tokens event to that representation.
+        // This is a rare situation, and has only been seen with some bot messages.
+        if (sent.tokens != null) {
+          _representations!.add(sent);
+        }
       } catch (err, s) {
         ErrorHandler.logError(
           m: "error parsing originalSent",

lib/pangea/toolbar/widgets/message_selection_overlay.dart

@@ -18,8 +18,6 @@ import 'package:fluffychat/pangea/events/event_wrappers/pangea_message_event.dar
 import 'package:fluffychat/pangea/events/event_wrappers/pangea_representation_event.dart';
 import 'package:fluffychat/pangea/events/models/pangea_token_model.dart';
 import 'package:fluffychat/pangea/events/models/pangea_token_text_model.dart';
-import 'package:fluffychat/pangea/events/models/tokens_event_content_model.dart';
-import 'package:fluffychat/pangea/extensions/pangea_room_extension.dart';
 import 'package:fluffychat/pangea/lemmas/lemma_info_response.dart';
 import 'package:fluffychat/pangea/practice_activities/activity_type_enum.dart';
 import 'package:fluffychat/pangea/practice_activities/practice_activity_model.dart';
@@ -135,7 +133,11 @@ class MessageOverlayController extends State<MessageSelectionOverlay>
 
       RepresentationEvent? repEvent =
           pangeaMessageEvent?.messageDisplayRepresentation;
-      repEvent ??= await _fetchNewRepEvent();
+
+      if (repEvent == null ||
+          (repEvent.event == null && repEvent.tokens == null)) {
+        repEvent = await _fetchNewRepEvent();
+      }
 
       if (repEvent?.event != null) {
         await repEvent!.sendTokensEvent(
@@ -145,24 +147,6 @@ class MessageOverlayController extends State<MessageSelectionOverlay>
           MatrixState.pangeaController.languageController.userL2!.langCode,
         );
       }
-      // If repEvent is originalSent but it's missing tokens, then fetch tokens.
-      // An edge case, but has happened with some bot message.
-      else if (repEvent != null &&
-          repEvent.tokens == null &&
-          repEvent.content.originalSent) {
-        final tokens = await repEvent.tokensGlobal(
-          pangeaMessageEvent!.senderId,
-          pangeaMessageEvent!.event.originServerTs,
-        );
-        await pangeaMessageEvent!.room.pangeaSendTextEvent(
-          pangeaMessageEvent!.messageDisplayText,
-          editEventId: pangeaMessageEvent!.eventId,
-          originalSent: pangeaMessageEvent!.originalSent?.content,
-          originalWritten: pangeaMessageEvent!.originalWritten?.content,
-          tokensSent: PangeaMessageTokens(tokens: tokens),
-          choreo: pangeaMessageEvent!.originalSent?.choreo,
-        );
-      }
 
       // Get all the lemma infos
       final messageVocabConstructIds = pangeaMessageEvent!