### Apache Airflow version

2.7.0

### What happened

After upgrading to `apache-airflow-providers-amazon==8.5.1`, I am no longer able to view logs from previous run attempts. 

Airflow is able to find the log stream successfully, but there's no content viewable (even though there are logs in the actual streams):
```
REDACTED.us-west-2.compute.internal
*** Reading remote log from Cloudwatch log_group: REDACTED log_stream: dag_id=REDACTED/run_id=REDACTED/task_id=REDACTED/attempt=1.log.
```

I believe this issue occurred from #33231 -  Looking at the [CloudWatch Logs code](https://github.com/apache/airflow/blob/providers-amazon/8.5.1/airflow/providers/amazon/aws/log/cloudwatch_task_handler.py#L109-L133), I think `task_instance.start_date` and `task_instance.end_date` somehow refer to its __latest__ run, and so the log contents are getting filtered out on previous attempts.


### What you think should happen instead

_No response_

### How to reproduce

1. Configure environment with remote CloudWatch logging
2. Run task
3. Clear task and re-run
4. The logs for the first attempt now no longer show

### Operating System

Debian 11

### Versions of Apache Airflow Providers

apache-airflow-providers-amazon==8.5.1

### Deployment

Other

### Deployment details

_No response_

### Anything else

_No response_

### Are you willing to submit PR?

- [ ] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

#
#
#
from __future__ import annotations
from datetime import datetime, timedelta
from functools import cached_property
import watchtower
from airflow.configuration import conf
from airflow.models import TaskInstance
from airflow.providers.amazon.aws.hooks.logs import AwsLogsHook
from airflow.providers.amazon.aws.utils import datetime_to_epoch_utc_ms
from airflow.utils.log.file_task_handler import FileTaskHandler
from airflow.utils.log.logging_mixin import LoggingMixin
class CloudwatchTaskHandler(FileTaskHandler, LoggingMixin):
    """
    CloudwatchTaskHandler is a python log handler that handles and reads task instance logs.
    It extends airflow FileTaskHandler and uploads to and reads from Cloudwatch.
    :param base_log_folder: base folder to store logs locally
    :param log_group_arn: ARN of the Cloudwatch log group for remote log storage
        with format ``arn:aws:logs:{region name}:{account id}:log-group:{group name}``
    :param filename_template: template for file name (local storage) or log stream name (remote)
    """
    trigger_should_wrap = True
    def __init__(self, base_log_folder: str, log_group_arn: str, filename_template: str | None = None):