Add workflow to auto-close mistake issues

[Copilot]

Users occasionally open issues by mistake, such as issues with just a URL in the title (e.g., https://github.com/FortAwesome/Font-Awesome.git) or issues with placeholder text that wasn't filled out (e.g., "TYPE YOUR QUESTION HERE").

Changes

Added .github/workflows/close-mistake-issues.yaml that:

• Triggers on issue open events
• Detects mistake patterns:
  • Title is a standalone URL
  • Title contains .git with body < 20 chars
  • Title contains placeholder text (like "TYPE YOUR QUESTION HERE", "TYPE YOUR ISSUE HERE", etc.) with unfilled template body
• Auto-closes detected issues with comment: "Appears to have been opened by mistake."

Uses actions/github-script@v7 with minimal issues: write permission.

---

• I've followed the contribution guidelines.
• I've signed the CLA.
• I've successfully run make lint && make test.
• I've added or updated any relevant documentation.
• I've updated the relevant release notes.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>https://github.com/FortAwesome/Font-Awesome.git</issue_title>
<issue_description></issue_description>

<agent_instructions>Create a workflow that runs when issues get opened and determines whether they are these sorts of mistake issues. If they are, the workflow should close the issue with a comment "Appears to have been opened by mistake."</agent_instructions>

Comments on the Issue (you are @copilot in this section)

@bepri Appears to have been opened by mistake.

• Fixes https://github.com/FortAwesome/Font-Awesome.git #5914

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[lengau]

@copilot make it work with issues like this too: #5913

[Copilot]

@copilot make it work with issues like this too: #5913

Done! The workflow now detects issues like #5913 with placeholder text in the title (e.g., "TYPE YOUR QUESTION HERE") and unfilled template bodies. Commit: ab33404