[#CODAP-899] Bug fix: Box plot median is hidden when equal to Q1

* A reasonable solution is to display values for both measures when they are equal. We accomplish this through manipulation of the array of hints that gets turned into the labels displayed on hover.

Author: bfinzer

v3/src/components/graph/adornments/univariate-measures/box-plot/box-plot-adornment-component.tsx

@@ -411,6 +411,18 @@ export const BoxPlotAdornmentComponent = observer(function BoxPlotAdornmentCompo
     const translationVars = [ minWhiskerValue, lowerQuartile, median, upperQuartile, maxWhiskerValue, iqr ]
       .map(v => helper.formatValueForScale(v))
     let textContent = `${t(model.labelTitle, { vars: translationVars })}`
+    // Special case in which median equals lower or upper quartile
+    // We combine the labels for those two measures so the user sees both
+    if (lowerQuartile === median || median === upperQuartile) {
+      const contentArray = textContent.split("\n")
+      if (lowerQuartile === median) {
+        contentArray[1] = `${contentArray[1]}; ${contentArray[2]}`
+      }
+      if (median === upperQuartile) {
+        contentArray[3] = `${contentArray[2]}; ${contentArray[3]}`
+      }
+      textContent = contentArray.join("\n")
+    }
 
     if ((measureRange?.min || measureRange?.min === 0) && (measureRange?.max || measureRange?.max === 0)) {
       const rangeSpecs = {