clean_up_inconsistent_bundle option should warn some references are dropped

[flavienSindou]

Description

When using

client-python/pycti/connector/opencti_connector_helper.py

Line 1739 in ea941a9

def send_stix2_bundle(self, bundle: str, **kwargs) -> list:

with cleanup_inconsistent_bundle option there is no user info about the missing references that are removed from the bundle.

Environment

1. OS (where OpenCTI server runs): NA
2. OpenCTI version: 6.5.9
3. Other environment details: NA

Reproducible Steps

1. create an inconsistent bundle (for instance 1 relationship pointing to missing entities)
2. use send_stix2_bundle method
3. No message is emitted

Expected Output

A warning message alerting bundle have been modified

Actual Output

Nothing

Additional information

NA