Only include match arguments for unambiguous steps

[mpkorstanje]

⚡️ What's your motivation?

Only unambiguous steps, i.e. steps with a single list of matches should be included in the report.

🏷️ What kind of change is this?

• 🐛 Bug fix (non-breaking change which fixes a defect)

📋 Checklist:

• Add sample from Cucumber-JVM 7.26.0 with ambiguous steps with arguments
• Add sample for ambiguous steps compatibility-kit#156 for verification
• 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.