Update toolbar color. Fix unit test

Author: bernardobelchior

packages/x-charts-pro/src/internals/plugins/useChartProZoom/calculateZoom.ts

@@ -25,7 +25,7 @@ export function calculateZoom<T extends Readonly<Pick<ZoomData, 'start' | 'end'>
   if (delta > 0) {
     delta = Math.min(delta, (span - minSpan) / 2);
   } else {
-    delta = Math.min(delta, (maxSpan - span) / 2);
+    delta = Math.max(delta, (span - maxSpan) / 2);
   }
 
   return {

packages/x-charts/src/Toolbar/Toolbar.tsx

@@ -13,7 +13,7 @@ const ToolbarRoot = styled('div', {
   padding: theme.spacing(0.5),
   minHeight: 44,
   boxSizing: 'border-box',
-  border: `1px solid ${(theme.vars || theme).palette.grey[300]}`,
+  border: `1px solid ${(theme.vars || theme).palette.divider}`,
   borderRadius: 4,
 }));