message: fix(Widget): util tooltip format
diff: @@ -624,7 +624,7 @@ export function getChartTooltipLabel (type, seriesData, options) {
  : record[`${mc.agg}(${decodedName})`]
  : 0
  value = getFormattedValue(value, mc.format)
  - return `${getFieldAlias(mc.field, {}) || mc.name}: ${value}`
  + return `${getFieldAlias(mc.field, {}) || decodedName}: ${value}`
  }))
  .join('<br/>')
  }
  