add JSON_NUMERIC_CHECK to json encode options

linked to 
#3286

This allows encoding to make numeric data more true to its type (not enclose them with "", making the receiving system identify
the types easier.

Note making the options variable configurable might be handy in the future depending on the needs of the users
people they interface with they might need additional options added here

Author: devorama

system/Format/JSONFormatter.php

@@ -56,7 +56,7 @@ class JSONFormatter implements FormatterInterface
 	 */
 	public function format($data)
 	{
-		$options = JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PARTIAL_OUTPUT_ON_ERROR;
+		$options = JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PARTIAL_OUTPUT_ON_ERROR | JSON_NUMERIC_CHECK;
 
 		$options = ENVIRONMENT === 'production' ? $options : $options | JSON_PRETTY_PRINT;