TODO: Doc update: Update default behaviour of use_for_snippets

[luke-hill]

Needs consensus across all maintainers. cc/ @davidjgoss @mpkorstanje @daantimmer @gasparnagy and prob others.

🤔 What's changed?

Had a mini discussion. And we feel as though we should probably change use_for_snippets to default from true to false. In some languages this has been "partially" done.

⚡️ What's your motivation?

Avoids bad regex spam. Users can still stipulate these to be used by using the true flag

🏷️ What kind of change is this?

• 📖 Documentation (improvements without changing code)
• 🏦 Refactoring/debt/DX (improvement to code design, tooling, etc. without changing behaviour)
• 💥 Breaking change (incompatible changes to the API)

♻️ Anything particular you want feedback on?

📋 Checklist:

• I agree to respect and uphold the Cucumber Community Code of Conduct
• I've changed the behaviour of the code
  • I have added/updated tests to cover my changes.
• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
• Users should know about my change
  • I have added an entry to the "Unreleased" section of the CHANGELOG, linking to this pull request.

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[luke-hill]

FYI I've not made the doc change yet, just made this PR so we don't forget.