ENCOA-94: Fixes the bug, refactored useStats to be useFilterRecordsByUser in order to not duplicate code and also refactored records.tsx and training.tsx to use a component which abstracts the user Selection for both stats and training.

src/pages/index.tsx

@@ -13,7 +13,6 @@ import {
 import { withIronSessionSsr } from "iron-session/next";
 import { sessionOptions } from "@/lib/session";
 import { useEffect, useState } from "react";
-import useStats from "@/hooks/useStats";
 import { averageScore, groupBySession, totalExams } from "@/utils/stats";
 import useUser from "@/hooks/useUser";
 import Diagnostic from "@/components/Diagnostic";