fix calender issue: HeatMap summary section is display for future dates

Author: devnamdev2003

src/app/features/calendar/calendar.component.html

@@ -80,7 +80,7 @@
     </div>
 
     <!-- ░░ HEATMAP SUMMARY ░░ -->
-    <div class="my-6 text-center" *ngIf="isShowHeatmap">
+    <div class="my-6 text-center" *ngIf="heatmapSummary.length > 0">
         <div
             class="max-w-[300px] md:max-w-md mx-auto w-full border border-[var(--input-border)] rounded-lg overflow-hidden text-sm">