Add dedicated documentation page for skip build feature (exit 183)

[Copilot]

Documentation Improvement Plan: Skip Build (exit 183) Feature

• Create new dedicated documentation page for skip build feature at /docs/user/guides/build/skip-build.rst
• Write comprehensive documentation covering:
  • Introduction and overview of the skip build feature
  • How the feature works (exit code 183 explanation)
  • When to use skip builds
  • Common use cases with examples
  • Best practices and limitations
• Update /docs/user/guides/build/index.rst to include the new skip build guide
• Update /docs/user/build-customization.rst to reference the new dedicated page
• Verify documentation builds successfully
• Address code review feedback:
  • Fix inverted logic in file type example for clarity
  • Improve mathematical explanation of exit code 183
• Address additional review feedback:
  • Remove entire "Cancel build based on a condition" section from build-customization.rst
  • Remove extra comments in skip-build.rst examples
  • Revert commit message example to original working command
  • Simplify environment variables section
  • Remove "Test edge cases" section
  • Remove "Further reading" section
  • Fix broken reference in monorepo.rst
  • Remove "Limited to user-defined jobs" section
• Final review and testing

Original prompt

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This section details on the original issue you should resolve

<issue_title>Docs: improve "skip build" (exit 183) documentation</issue_title>
<issue_description>We have this example in our documentation https://docs.readthedocs.io/en/latest/build-customization.html#cancel-build-based-on-a-condition that mentions how to cancel a build based on a particular condition. This is a good example and we have more and more people using it.

However, it does not talk about the feature it self at all. We should probably create a completely new page for this feature and explain it in a more in-deep way. We can grab some ideas from "Netlify's ignore builds" documentation: https://docs.netlify.com/configure-builds/ignore-builds/</issue_description>

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

• Fixes Docs: improve "skip build" (exit 183) documentation #10548

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[read-the-docs-community]

Documentation build overview

📚 dev | 🛠️ Build #30642268 | 📁 Comparing 65c746d against latest (6990c6e)

🔍 Preview build

No files changed.

[read-the-docs-community]

Documentation build overview

📚 docs | 🛠️ Build #30631054 | 📁 Comparing 0ff76af against latest (9f74278)

🔍 Preview build

Show files changed (6 files in total): 📝 5 modified | ➕ 1 added | ➖ 0 deleted

File	Status
build-customization.html	📝 modified
support.html	📝 modified
about/index.html	📝 modified
tutorial/index.html	📝 modified
guides/build/index.html	📝 modified
guides/build/skip-build.html	➕ added

[humitos]

I like this approach. @copilot please review my feedback and after that we are probably ready for another reviewer.

[Copilot]

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[humitos]

Looks good to me! 🎉