In Qt 6 QML, calling `Qt.locale().toString(date, format)` incorrectly evaluates to `[object Object]`. The correct approach is to call `toLocaleString` directly on the date object. This commit replaces the incorrect bindings in `ShareUsageWindow.qml` and `configGeneral.qml` and updates the corresponding test assertion.

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
Co-authored-by: Lucenx9 <185146821+Lucenx9@users.noreply.github.com>