test(aot): 添加对象链接操作符测试用例

- 创建了 TestAttrRef 类用于测试属性引用功能
- 实现了构造函数中的数组排序和切片操作逻辑
- 添加了主函数用于实例化测试对象并传入参数
- 定义了预期输出验证数组操作结果的正确性

tests/aot/attr-ref.phpt

@@ -0,0 +1,63 @@
+--TEST--
+object link operator
+--FILE--
+<?php
+
+class TestAttrRef
+{
+    private $k = null;
+    public $nums = null;
+
+    /**
+     * @param Integer $k
+     * @param Integer[] $nums
+     */
+    function __construct($k, $nums)
+    {
+        $this->k = $k;
+        $this->nums = $nums;
+        rsort($this->nums);
+        var_dump($this->nums);
+        $this->nums = [34, 5, 8, 2];
+        var_dump($this->nums);
+        $this->nums = array_slice($this->nums, 0, $k);
+        var_dump($this->nums);
+    }
+}
+
+function main()
+{
+    $k = 3;
+    $nums = [4, 5, 8, 2];
+    $obj = new TestAttrRef($k, $nums);
+}
+?>
+--EXPECT--
+array(4) {
+  [0]=>
+  int(8)
+  [1]=>
+  int(5)
+  [2]=>
+  int(4)
+  [3]=>
+  int(2)
+}
+array(4) {
+  [0]=>
+  int(34)
+  [1]=>
+  int(5)
+  [2]=>
+  int(8)
+  [3]=>
+  int(2)
+}
+array(3) {
+  [0]=>
+  int(34)
+  [1]=>
+  int(5)
+  [2]=>
+  int(8)
+}