[12.x] Adds missing streamJson() to ResponseFactory contract (#51544)

* [12.x] Adds missing streamJson() to ResponseFactory contact

* Update ResponseFactory.php

---------

Co-authored-by: Taylor Otwell <[email protected]>

src/Illuminate/Contracts/Routing/ResponseFactory.php

@@ -67,6 +67,17 @@ public function jsonp($callback, $data = [], $status = 200, array $headers = [],
      */
     public function stream($callback, $status = 200, array $headers = []);
 
+    /**
+     * Create a new streamed JSON response instance.
+     *
+     * @param  array  $data
+     * @param  int  $status
+     * @param  array  $headers
+     * @param  int  $encodingOptions
+     * @return \Symfony\Component\HttpFoundation\StreamedJsonResponse
+     */
+    public function streamJson($data, $status = 200, $headers = [], $encodingOptions = 15);
+
     /**
      * Create a new streamed response instance as a file download.
      *

src/Illuminate/Routing/ResponseFactory.php

@@ -131,7 +131,7 @@ public function stream($callback, $status = 200, array $headers = [])
     }
 
     /**
-     * Create a new streamed response instance.
+     * Create a new streamed JSON response instance.
      *
      * @param  array  $data
      * @param  int  $status