feat(aws sqs plugin): adds exception handling for ResourceClosedError errors

[mvilanova]

Changes to AWS SQS Signal Consumer Plugin

Added

• New exception handling for ResourceClosedError
• Import of ResourceClosedError from sqlalchemy.exc

Modified

• Error message wording for general exception handler
• Both error handlers now include signal name/variant info in logs

Details

New ResourceClosedError Handler

except ResourceClosedError as e:
    log.warning(
        f"Encountered an error when trying to create a signal instance. The plugin will retry again as the message hasn't been deleted from the SQS queue. Signal name/variant: {signal_instance_in.raw['name'] if signal_instance_in.raw and signal_instance_in.raw['name'] else signal_instance_in.raw['variant']}. Error: {e}"
    )
    db_session.rollback()
    continue

The changes improve error handling and logging consistency in the AWS SQS signal processing workflow.