TextInput::inputMask adds "; " to the mask which is always compared against in the setter causing it emit a change even though it really didn't

To reproduce, run attached application. It sets the same string as input mask and every time it emits a change signal, moves the cursor (if there) back to beginning.

QQuickTextInputPrivate::parseInputMask adds the "; " into the mask and then this will compare against a different value:

void QQuickTextInput::setInputMask(const QString &im)
{
    Q_D(QQuickTextInput);
    if (d->inputMask() == im)

Perhaps it could only compare up to the semicolon if im does not contain a semicolon.