LabelAngle expr in config can break the code

[kanitw]

This code breaks:

{
  "$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}
    ]
  },
  "transform": [
    {"calculate": "datum.a + datum.a", "as": "a"},
    {"calculate": "datum.a + datum.a", "as": "a"}
  ],
  "width": "container",
  "mark": "bar",
  "encoding": {
    "x": {
      "field": "a",
      "type": "nominal"
    },
    "y": {"field": "b", "type": "quantitative"}
  },
  "config": {
    "signals": [{
        "name": "labelRotateThreshold",
        "value": "30"
    }],
    "axisX": {
        "labelAlign": {"expr": "bandwidth('x') > labelRotateThreshold ? 'center' : 'right'"},
        "labelAngle": {"expr": "bandwidth('x') > labelRotateThreshold ? 0 : -90"},
        "labelLimit": {"expr": "bandwidth('x') > labelRotateThreshold ? bandwidth('x') : 200"}
    }
  }
}

Temporary fix is to add

"labelBaseline": {"expr": "bandwidth('x') > labelRotateThreshold ? 'top' : 'middle'"},

But the main culprit is that the defaultLabelBaseline logic doesn't check for signal from config yet.