Stops any current navigation the view is performing.

Example

async function stopNavigation() {
    const view = await fin.View.wrap({ name: 'testapp-view', uuid: 'testapp' });
    await view.navigate('https://www.google.com');
    return await view.stopNavigation();
}
stopNavigation().then(() => console.log('you shall not navigate')).catch(err => console.log(err));