QML TextField Does Not Gain Focus When Tapped on Touchscreen with QQuickWidget

When running a Qt 6.8.x application that uses QQuickWidget to host QML content, TextField elements do not gain focus when tapped on a touchscreen device. This makes it impossible for users to interact with TextFields via touch input.

This issue does not occur:

• With other input components like Button or TextArea within the same QML content using QQuickWidget.

• In standalone QML applications (i.e., applications not using QQuickWidget).

• In applications built with Qt 5.15 using QQuickWidget (works as expected there).

Steps to Reproduce:

1. Build and run the application on a touchscreen-enabled device

1. Tap on the TextField inside the application window.

Expected Result:
The TextField should gain focus and the virtual keyboard (if available) should appear.

Actual Result:
The TextField does not gain focus when tapped, and the virtual keyboard does not appear.

Tested Components:

• TextField: ❌ Does not work with QQuickWidget on touch.

• Button: ✅ Works as expected.

• TextArea: ✅ Works as expected.