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/groups.tsx

@@ -5,7 +5,6 @@ import {BsFileEarmarkText, BsPencil, BsStar, BsBook, BsHeadphones, BsPen, BsMega
 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";