Attach parent applicationId to meshes (#385)

- seems like TSM.Solid object doesn't have any Identifier

Converters/Tekla/Speckle.Converters.TeklaShared/ToSpeckle/TopLevel/ModelObjectToSpeckleConverter.cs

@@ -58,6 +58,12 @@ public Base Convert(object target)
     var displayValue = _displayValueExtractor.GetDisplayValue(modelObject).ToList();
     if (displayValue.Count > 0)
     {
+      foreach (var displayValueObject in displayValue)
+      {
+        // NOTE: since we put ModelObject applicationIds into proxies, we should also mutate the same application id for its displayValue objects.
+        // otherwise we will have anonymous objects on receive for other host apps
+        displayValueObject.applicationId = modelObject.GetSpeckleApplicationId();
+      }
       result["displayValue"] = displayValue;
     }