Scancode not passed to TSF

[miloush]

Description

The TextServiceManager does not pass scancode to Cicero/TSF

Reproduction Steps

wpf/src/Microsoft.DotNet.Wpf/src/PresentationCore/System/Windows/Input/TextServicesManager.cs

Lines 232 to 235 in 7f005fa

	default:
	wParam = KeyInterop.VirtualKeyFromKey(keyArgs.RealKey);
	scancode = 0;
	break;

type anything using IME

Expected behavior

The scancode to be properly populated, e.g. from keyArgs.Scancode

Actual behavior

scancode seen in ITfKeyEventSink.On[Test]KeyDown is always 0

Regression?

no

Known Workarounds

reconstruct from virtual key

Impact

text services relying on scancodes do not work in WPF

Configuration

.NET 10/4.8, Windows 11, x64

Other information

No response