livemap: segment that goes through the antimeridian should be straight

[IKupriyanov-HORIS]

from lets_plot import *
LetsPlot.setup_html()
data = {
    'lon': [-73.7997, 124.0012],
    'lat': [80.6408, 1.3256],
}

ggplot(data, ) + \
    geom_livemap(tiles=maptiles_lets_plot(theme='dark')) + \
    geom_segment(xend=data['lon'][0], yend=data['lat'][0], x=data['lon'][1], y=data['lat'][1], color='white', flat=True)

plotSpec

{
  "data": {
    "lon": [
      -73.7997,
      124.0012
    ],
    "lat": [
      80.6408,
      1.3256
    ]
  },
  "mapping": {},
  "data_meta": {},
  "kind": "plot",
  "scales": [],
  "layers": [
    {
      "geom": "livemap",
      "mapping": {},
      "data_meta": {},
      "tiles": {
        "kind": "vector_lets_plot",
        "url": "wss://tiles.datalore.jetbrains.com",
        "theme": "dark",
        "attribution": "Map: <a href=\"https://github.com/JetBrains/lets-plot\">\u00a9 Lets-Plot</a>, map data: <a href=\"https://www.openstreetmap.org/copyright\">\u00a9 OpenStreetMap contributors</a>."
      },
      "geocoding": {
        "url": "http://10.0.0.127:3020/map_data/geocoding"
      }
    },
    {
      "geom": "segment",
      "mapping": {},
      "data_meta": {},
      "flat": true,
      "xend": -73.7997,
      "yend": 80.6408,
      "x": 124.0012,
      "y": 1.3256,
      "color": "white"
    }
  ],
  "metainfo_list": []
}