fix: include top 3 ranks in leaderboard table

[ShreyaLbs]

Problem

The leaderboard table was skipping ranks 1, 2, and 3.
Users who wanted to see the full leaderboard in list format
could not do so because the top 3 were only shown in the
visual podium and completely absent from the table below.

Root Cause

In Leaderboard.tsx, the table was receiving
currentLeaderboard.slice(topPlayerCount) which cut off
the first 3 entries before passing data to LeaderboardTable.

Fix

Changed remainingPlayers to use the full currentLeaderboard
array so all ranks including 1, 2, and 3 appear in the table.

Changes

• File: src/modules/Dashboard/modules/LeaderBoard/components/Leaderboard.tsx
• Line 68: currentLeaderboard.slice(topPlayerCount) → currentLeaderboard

Steps to Reproduce

1. Go to https://app.mulearn.org/dashboard/leaderboard
2. Observe podium shows ranks 1, 2, 3
3. Observe table starts from rank 4

Expected Behavior

Table should show all ranks starting from 1 so the
full leaderboard is visible in list format.

[vercel]

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