refactor: update CustomTooltip types in chart components for better type safety

- Enhanced type definitions for the payload in CustomTooltip across multiple chart components to improve TypeScript support and maintainability.

src/components/dashboard/charts/CompletionRateChart.tsx

@@ -30,14 +30,21 @@ export function CompletionRateChart({
     total: day.totalTasks,
   }));
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   const CustomTooltip = ({
     active,
     payload,
     label,
   }: {
     active?: boolean;
-    payload?: any[];
+    payload?: Array<{
+      payload: {
+        day: string;
+        date: string;
+        completionRate: number;
+        completed: number;
+        total: number;
+      };
+    }>;
     label?: string;
   }) => {
     if (active && payload && payload.length) {