[7.x] Add blade attribute method whereDoesNotStartsWith(string) (#3…

…3851)

* Add method whereDoesNotStartsWith(string)

This change adds a method `whereDoesNotStartsWith($string)` which complements the `whereStartsWith($string)`

* Update ComponentAttributeBag.php

Co-authored-by: Taylor Otwell <taylor@laravel.com>

src/Illuminate/View/ComponentAttributeBag.php

@@ -117,6 +117,19 @@ public function whereStartsWith($string)
             return Str::startsWith($key, $string);
         });
     }
+
+    /**
+     * Return a bag of attributes with keys that do not start with the given value / pattern.
+     *
+     * @param  string  $string
+     * @return static
+     */
+    public function whereDoesntStartWith($string)
+    {
+        return $this->reject(function ($value, $key) use ($string) {
+            return Str::startsWith($key, $string);
+        });
+    }
 
     /**
      * Return a bag of attributes that have keys starting with the given value / pattern.