Add documentation on on.workflow_run.workflows

[EnricoMi]

Why:

The values of on.workflow_run.workflows are treated as glob patterns. Special characters requires escaping.

Details:
https://github.com/orgs/community/discussions/50835
actions/runner#3763

Closes: #12572

What's being changed (if available, include any code snippets, screenshots, or gifs):

Adds documentation for on.workflow_run.workflows, especially around glob patterns.

Check off the following:

• A subject matter expert (SME) has reviewed the technical accuracy of the content in this PR. In most cases, the author can be the SME. Open source contributions may require an SME review from GitHub staff.
• The changes in this PR meet the docs fundamentals that are required for all content.
• All CI checks are passing and the changes look good in the review environment.

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[github-actions]

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Source	Review	Production	What Changed
actions/writing-workflows/workflow-syntax-for-github-actions.md	fpt ghec ghes@ 3.16 3.15 3.14 3.13 3.12	fpt ghec ghes@ 3.16 3.15 3.14 3.13 3.12

Key: fpt: Free, Pro, Team; ghec: GitHub Enterprise Cloud; ghes: GitHub Enterprise Server

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[github-actions]

Thanks for opening a pull request! We've triaged this issue for technical review by a subject matter expert 👀

[Sharra-writes]

Thanks so much for opening a PR! I'll get this triaged for review.

[Sharra-writes]

Hi, @EnricoMi. 👋 One of the team wanted to make sure you had seen this while we're waiting for feedback from our SMEs on this issue.

[EnricoMi]

@Sharra-writes thanks for the reply! Please let the team know that I do not see the connection between the Dockerfile WORKDIR option and how Github Actions evaluates values for on.workflow_run.workflow.

[Sharra-writes]

@EnricoMi Well, no wonder it doesn't seem relevant, because I got my tabs mixed up and put this on the wrong pull request. 😅 I'm so sorry, and thank you for being patient with us. I do have this open for the SMEs to look at.

[subatoi]

Hi @EnricoMi, thanks for raising this—I'm going to reopen the original issue so we can transfer it internally.

We'll schedule this work as soon as we can. Just so you're aware, there's a few moving parts to this and I can't guarantee that we'll use this PR: since we need to make some further changes, it may be easier for us to start a new one instead. If we do that, would you like us to add you as a co-committer? I notice you're not using noreply on your email address in your commits.

Many thanks

[EnricoMi]

would you like us to add you as a co-committer

yes, please