[12.x] Improve missing attribute violation callable typehints (#57910)

Author: mosabbirrakib

src/Illuminate/Database/Eloquent/Model.php

@@ -229,7 +229,7 @@ abstract class Model implements Arrayable, ArrayAccess, CanBeEscapedWhenCastToSt
     /**
      * The callback that is responsible for handling missing attribute violations.
      *
-     * @var callable|null
+     * @var (callable(self, string))|null
      */
     protected static $missingAttributeViolationCallback;
 
@@ -570,7 +570,7 @@ public static function preventAccessingMissingAttributes($value = true)
     /**
      * Register a callback that is responsible for handling missing attribute violations.
      *
-     * @param  callable|null  $callback
+     * @param  (callable(self, string))|null  $callback
      * @return void
      */
     public static function handleMissingAttributeViolationUsing(?callable $callback)