Simplify scenario describing interactive debugging

[mvz]

Summary

Clean up interactive debugging scenario. Also, allow it to run on JRuby.

Details

• Remove stream configuration that is no longer needed
• Remove obsolete warning about binding.pry and related code
• Mark debugging scenario as supported on JRuby

Motivation and Context

While debugging #910, I noticed some obsolete bits in the scenario that is failing with upcoming Ruby 3.3.

How Has This Been Tested?

I ran the scenario again after applying the simplifications. I also checked that it passed on JRuby.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Internal change (refactoring, test improvements, developer experience or update of dependencies)

Checklist:

• I've added tests for my code
• My change requires a change to the documentation.
• I have updated the documentation accordingly.