### Body

We had an issue where extra link class (`AIPlatformConsoleLink`) was removed in [PR](https://github.com/apache/airflow/pull/26836) without removing the class from the `provider.yaml` extra links this resulted in web server exception as shown in https://github.com/apache/airflow/pull/28449


**The Task:**
Add validation that classes of extra-links in provider.yaml are importable

### Committer

- [X] I acknowledge that I am a maintainer/committer of the Apache Airflow project.
"""Raises when error happens in FileIo.io integration."""
@tenacity.retry(
    stop=tenacity.stop_after_attempt(5),
    wait=tenacity.wait_exponential(multiplier=1, max=10),
    retry=tenacity.retry_if_exception_type(FileIoException),
    before=tenacity.before_log(log, logging.DEBUG),
    after=tenacity.after_log(log, logging.DEBUG),
)
def _upload_text_to_fileio(content):