UI Automation in Windows Console: Remove deprecated isImprovedTextRangeAvailable

[codeofdusk]

Link to issue number:

None, merge once 2022.1 dev cycle starts.

Summary of the issue:

WinConsoleUIA.isImprovedTextRangeAvailable was deprecated in #12660 in favour of API levels.

Description of how this pull request fixes the issue:

Remove deprecated property.

Testing strategy:

Tested that UIA console still functions.

Known issues with pull request:

None known.

Change log entries:

== Changes for Developers ==

• NVDAObjects.UIA.winConsoleUIA.WinConsoleUIA.isImprovedTextRangeAvailable has been removed. Use apiLevel instead.

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

[codeofdusk]

This PR is no longer blocked.