Find the Array Bug

The leaderboard shows 95, 9, 88 as the top three — but someone scored 100! And the "All scores" line is no longer in the order the scores came in. The function looks reasonable at first glance. Debug it.

topThree([88, 9, 100, 72, 95, 7])  // [100, 95, 88]
topThree([5, 40, 300])              // [300, 40, 5]
topThree([42])                      // [42]   (fewer than 3 is fine)
topThree([])                        // []

Constraints

• Return a new array of numbers, highest first. Duplicates count separately ([10, 10, 3] is valid).
• Never modify the array that was passed in — other code still needs it in its original order.
• Scores can be any numbers, including negatives.