Include dataset_id, table_id, poll_interval in BigQueryIntervalCheckTrigger serialization

[abhid-007]

BigQueryIntervalCheckTrigger.__init__ accepts dataset_id, table_id, and poll_interval and stores them via the parent BigQueryInsertJobTrigger.__init__, but serialize() omitted all three. After a triggerer restart the trigger was reinstantiated with defaults (dataset_id=None, table_id=None, poll_interval=4.0), silently changing polling cadence and dropping the templated table identity for any task that customised them.

This PR adds the three fields to the serialize() payload so the trigger round-trips through serialize() -> BigQueryIntervalCheckTrigger(**kwargs) cleanly. The existing serialization test gains the three new keys, and a round-trip test mirrors the pattern used by the sibling fixes in #66965 / #66966 / #66968.

This is the last of the five triggers called out in #66961; the static check that flags this class of bug is being introduced in #66960.

related: #66961
related: #66960

---

Was generative AI tooling used to co-author this PR?

• Yes

[boring-cyborg]

Congratulations on your first Pull Request and welcome to the Apache Airflow community! If you have any issues or are unsure about any anything please check our Contributors' Guide
Here are some useful points:

• Pay attention to the quality of your code (ruff, mypy and type annotations). Our prek-hooks will help you with that.
• In case of a new feature add useful documentation (in docstrings or in docs/ directory). Adding a new operator? Check this short guide Consider adding an example Dag that shows how users should use it.
• Consider using Breeze environment for testing locally, it's a heavy docker but it ships with a working Airflow and a lot of integrations.
• Be patient and persistent. It might take some time to get a review or get the final approval from Committers.
• Please follow ASF Code of Conduct for all communication including (but not limited to) comments on Pull Requests, Mailing list and Slack.
• Be sure to read the Airflow Coding style.
• Always keep your Pull Requests rebased, otherwise your build might fail due to changes not related to your commits.
  Apache Airflow is a community-driven project and together we are making it better 🚀.
  In case of doubts contact the developers at:
  Mailing List: dev@airflow.apache.org
  Slack: https://s.apache.org/airflow-slack

[shahar1]

Already merged here: #67053