fix: fix test

Author: sjbur

packages/devextreme/js/__internal/scheduler/__tests__/workspace.base.test.ts

@@ -217,7 +217,7 @@ describe('scheduler workspace skipped days support', () => {
     });
 
     expect(workspace.getStartViewDate()).toEqual(new Date(2026, 2, 29));
-    expect(workspace.generateRenderOptions().cellCount).toBe(7);
+    expect((workspace as any).getCellCount()).toBe(7);
   });
 
   it('should use custom skippedDays in work week runtime layout', () => {
@@ -228,7 +228,7 @@ describe('scheduler workspace skipped days support', () => {
     });
 
     expect(workspace.getStartViewDate()).toEqual(new Date(2026, 2, 29));
-    expect(workspace.generateRenderOptions().cellCount).toBe(6);
+    expect((workspace as any).getCellCount()).toBe(6);
   });
 
   it('should skip configured hidden days when incrementing timeline header dates', () => {