Allow deleting replies when comments are deleted.

tests/Models/Post.php

@@ -3,6 +3,7 @@
 namespace BeyondCode\Comments\Tests\Models;
 
 use BeyondCode\Comments\Traits\HasComments;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 
 class Post extends Model
@@ -10,4 +11,13 @@ class Post extends Model
     use HasComments;
 
     protected $guarded = [];
-}
+
+    public static function boot(): void
+    {
+        parent::boot();
+
+        static::deleting(function (self $model) {
+            $model->comments()->delete();
+        });
+    }
+}