[10.x] Expose Js::json() helper (laravel#46935)

* change to static

* Update Js.php

---------

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

src/Illuminate/Support/Js.php

@@ -74,7 +74,7 @@ protected function convertDataToJavaScriptExpression($data, $flags = 0, $depth =
             $data = $data->value;
         }
 
-        $json = $this->jsonEncode($data, $flags, $depth);
+        $json = static::encode($data, $flags, $depth);
 
         if (is_string($data)) {
             return "'".substr($json, 1, -1)."'";
@@ -93,7 +93,7 @@ protected function convertDataToJavaScriptExpression($data, $flags = 0, $depth =
      *
      * @throws \JsonException
      */
-    protected function jsonEncode($data, $flags = 0, $depth = 512)
+    public static function encode($data, $flags = 0, $depth = 512)
     {
         if ($data instanceof Jsonable) {
             return $data->toJson($flags | static::REQUIRED_FLAGS);