Bug(selection): interval selection on map disappears when no marks are selected

[semla]

Bug Description

selection-disappears.webm

Select an interval, move it to where there is no mark. The square disappears.

Editor

{
  "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
  "width": 900,
  "height": 600,
  "layer": [
    {
      "data": {
        "url": "data/us-10m.json",
        "format": {"type": "topojson", "feature": "states"}
      },
      "projection": {"type": "albersUsa"},
      "mark": {"type": "geoshape", "fill": "lightgray", "stroke": "white"}
    },
    {
      "data": {"url": "data/airports.csv"},
      "projection": {"type": "albersUsa"},
      "mark": "circle",
      "params": [{"name": "brush", "select": "interval"}],
      "encoding": {
        "longitude": {"field": "longitude", "type": "quantitative"},
        "latitude": {"field": "latitude", "type": "quantitative"},
        "size": {"value": 10},
        "color": {"value": "steelblue"}
      }
    }
  ]
}

A workaround is to "create a new mark rect that is based on the brush's signal data– not the brush's selected data".
Editor

Checklist

• I checked for duplicate issues.