Bugfix

Fix a bug where route names could have 2 consecutive dots.

Ex:

new RouteGroup(
    [
        new RouteGroup(
            [
                Route::get('/foo', 'foo', name: 'route_name'),
            ],
        ),
    ],
    name: 'group',
);

Previously, the route ended up with the name group..route_name.
Now, its name is just group.route_name.