Fix Invalid log order in ElasticsearchTaskHandler

[suhanovv]

Fixes for 17512

The previous implementation assumed a one-time definition of the offset when creating an instance of the class, which led to the appearance of the same offset in the logs, while the documentation says about uniqueness values.

Log messages with specific log_id are sorted based on `offset`,
    which is a unique integer indicates log message's order.

My implementation adds generation of an offset when creating a log message

[boring-cyborg]

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[potiuk]

NICE!

[github-actions]

The PR is likely OK to be merged with just subset of tests for default Python and Database versions without running the full matrix of tests, because it does not modify the core of Airflow. If the committers decide that the full tests matrix is needed, they will add the label 'full tests needed'. Then you should rebase to the latest main or amend the last commit of the PR, and push it with --force-with-lease.

[boring-cyborg]

Awesome work, congrats on your first merged pull request!

[whitleykeith]

When will this fix be available? The provider hasn't been updated with these changes yet

[potiuk]

~ week or so. We are following about monthly cadence of releasing providers.