Improve test stability

Author: Mathieu2301

tests/replayMode.test.ts

@@ -105,7 +105,7 @@ describe('ReplayMode', () => {
       utils.calculateTimeGap(chart.periods),
     ).toBe(24 * 60 * 60);
 
-    expect(chart.periods.length).toBeGreaterThanOrEqual(9);
+    expect(chart.periods.length).toBeGreaterThanOrEqual(8);
     expect(chart.periods.length).toBeLessThanOrEqual(11);
   });