Support table navigation for WPF list item DataItem objects

[LeonarddeR]

Link to issue number:

None

Steps to reproduce the issue

1. Open PowerShell
2. Type Get-Process | Out-GridView
3. Observe that table navigation doesn't work on the several entries in the grid.

Description of how this pull request fixes the issue:

This pr adds the RowWithFakeNavigation on these objects, thereby automatically exposing the ability to table nav through the grid, including reading of column headers.

Testing strategy:

Tested in both PowerShell 5.1 and PowerShell Core 7.1

Known issues with pull request:

This change might hit untested controls. Note that the logic in RowWithFakeNavigation continuously checks child count, so I think it's pretty safe to add. It is also added to icons on the desktop, for example.

Change log entries:

New features

• Table navigation is now supported in grid controls created using the Out-GridView cmdlet in PowerShell.

Code Review Checklist:

• Pull Request description:
  • description is up to date
  • change log entries
• Testing:
  • Unit tests
  • System (end to end) tests
  • Manual testing
• API is compatible with existing add-ons.
• Documentation:
  • User Documentation
  • Developer / Technical Documentation
  • Context sensitive help for GUI changes
• UX of all users considered:
  • Speech
  • Braille
  • Low Vision
  • Different web browsers
  • Localization in other languages / culture than English