Tick should respect "width/height/size": {"band": 0.5}

[kanitw]

Currently the default tick length is fixed no matter what the step size is.

[kanitw]

Technically, we now respect step size

{
  "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
  "description": "A simple bar chart with embedded data.",
  "data": {
    "values": [
      {"a": "A", "b": 28}, {"a": "B", "b": 55}, {"a": "C", "b": 43},
      {"a": "D", "b": 91}, {"a": "E", "b": 81}, {"a": "F", "b": 53},
      {"a": "G", "b": 19}, {"a": "H", "b": 87}, {"a": "I", "b": 52} 
    ]
  },
  "width": {"step": 50},
  "mark": "tick",
  "encoding": {
    "x": {"field": "a", "type": "nominal", "axis": {"labelAngle": 0}},
    "y": {"field": "b", "type": "quantitative"}
  }
}

but we does not respect "width/height/size": {"band": 0.5} yet