fix: autoload looping a file when only a single file in directory

closes #768

src/uosc/lib/utils.lua

@@ -421,7 +421,7 @@ end
 ---@param current_index number
 ---@param delta number 1 or -1 for forward or backward
 function decide_navigation_in_list(paths, current_index, delta)
-	if #paths < 2 then return #paths, paths[#paths] end
+	if #paths < 2 then return end
 	delta = delta < 0 and -1 or 1
 
 	-- Shuffle looks at the played files history trimmed to 80% length of the paths