Render list items in rendered fields view

[cvaliente]

This PR rebases #22854; see the original PR (#21227) for context.

[boring-cyborg]

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[uranusjr]

Please address the previous review comments. #22854 (review)

[cvaliente]

@uranusjr ok, I added the annotation to render() parameters.
I did not touch airflow/www/templates/airflow/ti_code.html and the out string concatenation is also untouched.

[uranusjr]

Can you setup linting locally and resolve errors please? See guide here: https://github.com/apache/airflow/blob/main/CONTRIBUTING.rst#step-4-prepare-pr

[uranusjr]

I’ll add a separate PR for refactoring out those += calls later

[cvaliente]

thanks @uranusjr
The checks now all pass, and the PR is ready to be reviewed and merged

[boring-cyborg]

Awesome work, congrats on your first merged pull request! You are invited to check our Issue Tracker for additional contributions.