[JUnit Platform Engine] Use number-and-pickle-if-parameterized strategy

[mpkorstanje]

⚡️ What's your motivation?

Given a feature with parameterized and unparameterized examples:

Feature: Examples Tables

  Scenario Outline: Eating cucumbers
    Given there are <start> cucumbers
    When I eat <eat> cucumbers
    Then I should have <left> cucumbers

    Examples: These are passing
      | start | eat | left |
      |    12 |   5 |    7 |
      |    20 |   5 |   15 |

    Examples: These are failing
      | start | eat | left |
      |    12 |  20 |    0 |
      |     0 |   1 |    0 |

  Scenario Outline: Eating <color> cucumbers
    Given I am transparent
    When I eat <color> cucumbers
    Then I become <color>

    Examples:
      | color |
      |   red |
      | green |
      |  blue |

When the scenario name is parameterized, instead of only numbering the examples, the interpolated scenario name is also included.

Examples Tables
 - Eating cucumbers
   - These are passing
     - Example #1.1
     - Example #1.2
  - These are failing
  - Eating <color> cucumbers
   - Examples
    - Example #1.1: Eating red cucumbers
    - Example #1.2: Eating green cucumbers
    - Example #1.3: Eating blue cucumbers

🏷️ What kind of change is this?

• ⚡ New feature (non-breaking change which adds new behaviour)

📋 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.