fix: when fetching translation, only consider a message to have included IT if the sent message body matches the message at the end of choreo (#3936)

lib/pangea/choreographer/models/choreo_record.dart

@@ -223,6 +223,10 @@ class ChoreoRecord {
 
   List<ITStep> get itSteps =>
       choreoSteps.where((e) => e.itStep != null).map((e) => e.itStep!).toList();
+
+  bool endedWithIT(String sent) {
+    return includedIT && stepText() == sent;
+  }
 }
 
 /// A new ChoreoRecordStep is saved in the following cases:

lib/pangea/events/event_wrappers/pangea_message_event.dart

@@ -590,7 +590,8 @@ class PangeaMessageEvent {
       throw Exception("Missing language codes");
     }
 
-    final includedIT = (originalSent?.choreo?.includedIT ?? false) &&
+    final includedIT =
+        (originalSent?.choreo?.endedWithIT(originalSent!.text) ?? false) &&
             !(originalSent?.choreo?.includedIGC ?? true);
 
     RepresentationEvent? rep;