Line with invalid null broken

[kanitw]

Bug Description

{
  "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
  "data": {
    "values": [
      {
        "x": -1,
        "y": null
      },
      {
        "x": 1,
        "y": 10
      },
      {
        "x": 2,
        "y": 30
      },
      {
        "x": 3,
        "y": null
      },
      {
        "x": 4,
        "y": 15
      },
      {
        "x": 5,
        "y": 30
      },
      { 
        "x": 6,
        "y": 40
      },
      {
        "x": 7,
        "y": 20
      },
      {
        "x": 10,
        "y": null
      }
    ]
  },
  "mark": {"type": "line", "invalid": null},
  "encoding": {
    "x": {"field": "x", "type": "quantitative"},
    "y": {"field": "y", "type": "quantitative"}
  }
}

All null values are interpreted as max values!!