calculate_max_event_charge_count_within_limit doesn't do it's job when pushing data to default dataset in PPE actor #705

Currently when testing a user providing Maximum cost per run to an PPE actor run (not input but env variable seen from actor side)

EVENT_NAME = "apify-default-dataset-item"

async with Actor:
  charging_manager = Actor.get_charging_manager()
  remaining = charging_manager.calculate_max_event_charge_count_within_limit(EVENT_NAME)
  await Actor.push_data({"test":"Yes"})
  remaining = charging_manager.calculate_max_event_charge_count_within_limit(EVENT_NAME)
  await Actor.push_data({"test":"Yes"})
  remaining = charging_manager.calculate_max_event_charge_count_within_limit(EVENT_NAME)

remaining is always the same

Unless if i do

await Actor.push_data({"test":"Yes"}, EVENT_NAME)

Then calculate_max_event_charge_count_within_limit() works corretly
But i have to catch and ignore the error raised by push_data() because as mentioned in the logs

apify_client._errors.ApifyApiError: Event "apify-default-dataset-item" is system event and cannot be charged.