buffer returns an invalid result

The following returns an invalid result in 1.84 (while returning `MULTIPOLYGON()` in `1.78`).

```cpp
#include

int main() {

using Point = boost::geometry::model::d2::point_xy;
using Polygon = boost::geometry::model::polygon;
using Linestring = boost::geometry::model::linestring;
using MultiPolygon = boost::geometry::model::multi_polygon;
using MultiLinestring = boost::geometry::model::multi_linestring;

boost::geometry::strategy::buffer::join_round join_strategy(36);
boost::geometry::strategy::buffer::distance_symmetric distance_strategy(1.0);
boost::geometry::strategy::buffer::end_round end_strategy(36);
boost::geometry::strategy::buffer::side_straight side_strategy;
boost::geometry::strategy::buffer::point_circle point_strategy;

MultiLinestring l1;
boost::geometry::read_wkt("MULTILINESTRING((11393 -19530,\
-5728 30983,-9223372036854775807 15322,27608 14504),\
(-32468 -20811,-27782 -14559,-30822 11140,-12550 27458),\
(24176 -9103,4178 -868,7332 11648,21439 30360,-121 11529,8803 -10835,5660 20213))", l1);

MultiPolygon result;

boost::geometry::buffer(l1, result,
distance_strategy, side_strategy,
join_strategy, end_strategy, point_strategy);

std::cout << boost::geometry::wkt(result) << std::endl;
std::cout << boost::geometry::is_valid(result) << std::endl;
}
```