fix airflowignore negation does not work in subfolders

[henry3260]

Closes: #58636
From docs;
https://airflow.apache.org/docs/apache-airflow/stable/core-concepts/dags.html#airflowignore
https://git-scm.com/docs/gitignore

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[Lee-W]

Thanks, but we'll need to resolve the CI failure before the next round review

[potiuk]

Thanks, but we'll need to resolve the CI failure before the next round review

Yep.

[devgonvarun]

Hi @henry3260, in which airflow version will this be released? Noticed that this is merged with main but not part of the recent airflow 3.1.4 release.

[Lee-W]

Hi @henry3260, in which airflow version will this be released? Noticed that this is merged with main but not part of the recent airflow 3.1.4 release.

We miss backporting it. I just did #59305. most likely 3.1.5

[devgonvarun]

Hi @Lee-W, I dont see this in the airflow 3.1.5 source code despite the milestone set as 3.1.5.

[Lee-W]

Hi @Lee-W, I dont see this in the airflow 3.1.5 source code despite the milestone set as 3.1.5.

3.1.4 was yanked due to an accidental release mistake, and 3.1.5 is essentially 3.1.4rc2. Thus, we did not add anything to 3.1.5 / 3.1.4rc2. This will be added to 3.1.6 instead