feat: italicize questions, don't give lemma activity if lemma and form are the same (#1349)

lib/pangea/models/pangea_token_model.dart

@@ -213,7 +213,8 @@ class PangeaToken {
       case ActivityTypeEnum.wordMeaning:
         return canBeDefined;
       case ActivityTypeEnum.lemmaId:
-        return lemma.saveVocab;
+        return lemma.saveVocab &&
+            text.content.toLowerCase() != lemma.text.toLowerCase();
       case ActivityTypeEnum.emoji:
         return true;
       case ActivityTypeEnum.morphId:

lib/pangea/widgets/practice_activity/multiple_choice_activity.dart

@@ -197,7 +197,7 @@ class MultipleChoiceActivityState extends State<MultipleChoiceActivity> {
           style: AppConfig.messageTextStyle(
             widget.event,
             Theme.of(context).colorScheme.primary,
-          ),
+          ).merge(const TextStyle(fontStyle: FontStyle.italic)),
         ),
         const SizedBox(height: 8),
         if (practiceActivity.activityType ==