Add headings to report

[davidjgoss]

🤔 What's changed?

Now we have a report with two parts - scenarios, and global hooks - we're adding headings accordingly. These are styled in the same way as the keyword ones, minus the color.

Also, we're removing the <NoMatchResult/> component in favour of a simpler message presentation that is consistent between the two sections.

🏷️ What kind of change is this?

• ⚡ New feature (non-breaking change which adds new behaviour)
• 💥 Breaking change (incompatible changes to the API)

📋 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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