source-hubspot-native: don't serialize empty object for empty propert…

…iesWithHistory

Omit the frivolous empty object for an empty propertiesWithHistory, so that it
is not picked up by schema inference. The default setting will not capture
propertiesWithHistory so having this empty object in every document would likely
be confusing.

source-hubspot-native/source_hubspot_native/models.py

@@ -183,6 +183,8 @@ def _post_init(self) -> Self:
         self.propertiesWithHistory = {
             k: v for k, v in self.propertiesWithHistory.items() if len(v)
         }
+        if len(self.propertiesWithHistory) == 0:
+            delattr(self, "propertiesWithHistory")
 
         # If the model has attached inline associations,
         # hoist them to corresponding arrays. Then clear associations.