fix: select the requested track after queue end

tests/test_music_player.py

@@ -118,6 +118,17 @@ class MusicPlayerQueueTest(unittest.IsolatedAsyncioTestCase):
         self.assertIsNone(state.current)
         self.assertEqual(state.index, 3)
 
+    async def test_jump_after_queue_end_plays_selected_track(self):
+        player, voice_client, state = await self._queue_abc()
+        state.index = 2
+        await player.play_next(GUILD, advance=True)
+        voice_client.playing = None
+
+        await player.jump(GUILD, 0)
+
+        self.assertEqual(state.index, 0)
+        self.assertEqual(state.current.id, "a")
+
     async def test_jump_selects_target_without_advancing_past_it(self):
         player, _, state = await self._queue_abc()
         await player.jump(GUILD, 2)