New TI field in 2.8 - custom_operator_name

[fritz-astronomer]

custom_operator_name = Column(String(1000))

[atulya-astronomer]

Tested using Pytest, Astro <> Astro and MWAA <> Astro for Airflow 3.10. All test cases passed and didn't run into any issues while manual testing. Merging the associated PR to main. A release has already been created on PyPI. Attached MWAA starship page post migration for reference.