fix: use json stringify to avoid ending up with invalid json and removing unnecessary whitespace in key/value

Signed-off-by: Pranav C <pranavxc@gmail.com>

packages/nc-gui/components/cell/Json.vue

@@ -72,13 +72,7 @@ const clear = () => {
 
 const formatJson = (json: string) => {
   try {
-    json = json
+    return JSON.stringify(JSON.parse(json))
-      .trim()
-      .replace(/^\{\s*|\s*\}$/g, '')
-      .replace(/\n\s*/g, '')
-    json = `{${json}}`
-
-    return json
   } catch (e) {
     console.log(e)
     return json