UI Automation in Windows Console: Always use ConsoleUIATextInfo in UIA consoles

[codeofdusk]

Link to issue number:

Fixes #10030. Related to #9614.

Summary of the issue:

NVDA incorrectly reports an empty selection when focusing Windows consoles.

Since the TextInfo property on consoles was prefixed with an underscore, NVDA dynamically selected the wrong TextInfo implementation (see NVDAObjects.UIA.UIA._getTextInfo). This means that when a console is first focused, UIATextInfo is selected instead of WinConsoleUIA.TextInfo, so our patched isCollapsed logic isn't used and speech.speakPreselectedText is called (see lines 391–393 in speech/__init__.py).

Description of how this pull request fixes the issue:

Assign the textInfo class as WinConsoleUIA.TextInfo rather than WinConsoleUIA._TextInfo.

Testing performed:

Tested steps from the issue and confirmed that no superfluous selections are reported.

Known issues with pull request:

None.

Change log entry:

None.

[codeofdusk]

Cc @feerrenrut @LeonarddeR

[AppVeyorBot]

PR introduces Flake8 errors 😲

See test results for Failed build of commit d7784c33fc