test: show effect of checking for same dimension and stacked field in both polar and cartesian fields

Author: hydrosquall

src/stack.ts

@@ -179,10 +179,11 @@ export function stack(m: Mark | MarkDef, encoding: Encoding<string>): StackPrope
     const hasSameDimensionAndStackedField = dimensionField && dimensionField === stackedField;
 
     // For polar coordinates, do not set a groupBy when working with quantitative fields.
-    const isPolar = isPolarPositionChannel(fieldChannel) || isPolarPositionChannel(dimensionChannel);
-    const shouldAddPolarGroupBy = !isUnbinnedQuantitative(dimensionDef);
+    // const isPolar = isPolarPositionChannel(fieldChannel) || isPolarPositionChannel(dimensionChannel);
+    // const shouldAddPolarGroupBy = !isUnbinnedQuantitative(dimensionDef);
 
-    if (isPolar ? shouldAddPolarGroupBy : !hasSameDimensionAndStackedField) {
+    if (!hasSameDimensionAndStackedField) {
+      // if (isPolar ? shouldAddPolarGroupBy : !hasSameDimensionAndStackedField) {
       // avoid grouping by the stacked field
       groupbyChannels.push(dimensionChannel);
       groupbyFields.add(dimensionField);