fix: correct JSON format for decimal number inside object in mongo

Author: yaroslav8765

adminforth/dataConnectors/mongo.ts

@@ -213,6 +213,17 @@ class MongoConnector extends AdminForthBaseConnector implements IAdminForthDataS
                 return null;
             }
             return value?.toString();
+        } else if (field.type == AdminForthDataTypes.JSON) {
+            if (JSON.stringify(value).includes('$numberDecimal')) {
+                const json = JSON.stringify(value, (key, value) => {
+                    if (value && typeof value === 'object' && '$numberDecimal' in value) {
+                        return value.$numberDecimal; 
+                    }
+                    return value;
+                });
+                return JSON.parse(json);
+            }
+            return value;
         }
 
         return value;