TimeSeries: Fix y-axis Yes/No and On/Off boolean units (#61207)

packages/grafana-data/src/field/displayProcessor.ts

@@ -73,7 +73,7 @@ export function getDisplayProcessor(options?: DisplayProcessorOptions): DisplayP
   }
 
   const hasCurrencyUnit = unit?.startsWith('currency');
-  const hasBoolUnit = unit === 'bool';
+  const hasBoolUnit = isBooleanUnit(unit);
   const isNumType = field.type === FieldType.number;
   const isLocaleFormat = unit === 'locale';
   const canTrimTrailingDecimalZeros =

packages/grafana-ui/src/components/uPlot/config/UPlotAxisBuilder.ts

@@ -130,6 +130,7 @@ export class UPlotAxisBuilder extends PlotConfigBuilder<AxisProps, Axis> {
 
     const gridColor = theme.isDark ? 'rgba(240, 250, 255, 0.09)' : 'rgba(0, 10, 23, 0.09)';
 
+    // TODO: this is pretty flimsy now that scaleKey is composed from multiple parts :/
     if (isBooleanUnit(scaleKey)) {
       splits = [0, 1];
     }