fix(ruby): stricter block params, allowing bitwise OR

[dysonreturns]

Block parenthesis, which are two pipe symbols are applicable after a do |param| or inside of an inline block { |param| ... }.

Resolves #4187

Changes

This change ensures the pipes |param| are preceded by an open bracket { or a do. By being specific when these parenthesis occur, bitwise OR operations | don't read what follows as params indefinitely.

Checklist

• [x] Added markup tests, or they don't apply here because...
• [x] Updated the changelog at CHANGES.md

[jimtng]

Thanks! I've just noticed this bug too