How to hide tooltip of overlapped line charts in vega-lite?

I have multiple line chart with tooltip showing the data, line chart looks like

I configured to show only the line that is clicked in legend and its tooltip when hover over the dot

Since there are many parameter line which overlaps at some points, the tooltip sometimes showing the different parameter that is hiding, for example, in the above picture, I selected PRAUC line from legend and hover on its tooltip, but for the same line if I hover on different point, its showing different parameter value as that line is overlapping on this one, as below, but its line is hidden

I have set the opacity value to 0.02 for the line, but even though if i hover i can see the tooltips, is it possible to show the tooltip for only the line that is selected, my full code is below

{
  "$schema": "https://vega.github.io/schema/vega-lite/v2.6.0.json",
  "title": "Model Dashboard",
  "data": {
    "url" : {
        "%context%": true,
        "index": "creditloan.ml_models_v2.comparison",
        "body": {
          "size":10000,
          "_source": ["Metrics","Value","modelName","modelAlgorithm","modelStartTime"],
        }
      }  
      "format": {"property": "hits.hits"},
  }, 
 "transform": [{
      "filter": "datum._source.Value <= 1.0"
     }],
 "mark": {
    "type": "line",
    "point": {
      "size": 250
    }
    "strokeWidth": 4,
    "strokeCap" : "round",
    "interpolate" :"monotone"
  },
 "selection": {
    "industry": {
      "type": "multi", "fields": ["_source.Metrics"], "bind": "legend"
    }
  },
 "encoding": {
    "x": {"field": "_source.modelStartTime", 
          "type": "nominal", 
          "title":"Models"
          "axis": {
            "labelAngle": -20,
            "labelLimit": 500,
            "labelFontSize" : 14
            },
          "sort": {"order": "descending", "field": "_source.modelStartTime"}  
          },
    "y": {"field": "_source.Value", 
          "type": "quantitative", 
          "title":"Metric Score",
          "scale": { "domain": [0.0, 1.0] }  
          },
    "color": {"field": "_source.Metrics", 
              "type": "nominal", 
              "title":"Metrics"},
    "tooltip": [
      {"field": "_source.Metrics", "type": "nominal", "title":"Metric"},
      {"field": "_source.Value", "type": "quantitative", "title":"Value"},
      {"field": "_source.modelAlgorithm", "type": "nominal", "title":"ModelAlgorithm"},
      {"field": "_source.modelStartTime", "type": "nominal", "title":"ModelStartTime"},
      {"field": "_source.modelName", "type": "nominal", "title":"ModelName"}
    ],
    "opacity": {
      "condition": {"selection": "industry", "value": 1},
      "value": 0.02
    }
  }
}