[12.x] Fix Arr::first for ArrayObject and AsArrayObject values (#57969)

* Fix Arr::first for ArrayObject and other array-like values

* Update Arr::first docblock to mention iterable

Author: prince-noman

src/Illuminate/Collections/Arr.php

@@ -242,7 +242,7 @@ public static function exists($array, $key)
     }
 
     /**
-     * Return the first element in an array passing a given truth test.
+     * Return the first element in an iterable passing a given truth test.
      *
      * @template TKey
      * @template TValue
@@ -271,6 +271,8 @@ public static function first($array, ?callable $callback = null, $default = null
             return value($default);
         }
 
+        $array = static::from($array);
+
         $key = array_find_key($array, $callback);
 
         return $key !== null ? $array[$key] : value($default);

tests/Support/SupportArrTest.php

@@ -376,6 +376,15 @@ public function testFirst()
         $this->assertNull(Arr::first($cursor));
     }
 
+    public function testFirstWorksWithArrayObject()
+    {
+        $arrayObject = new ArrayObject([0, 10, 20]);
+
+        $result = Arr::first($arrayObject, fn ($value) => $value === 0);
+
+        $this->assertSame(0, $result);
+    }
+
     public function testJoin()
     {
         $this->assertSame('a, b, c', Arr::join(['a', 'b', 'c'], ', '));