Value is required in portal task submission even though it is marked as not required in the template

In our templates, we have set the following values to not required. However, they are failing when not included in the portal request.
File: https://github.com/Azure/automation-task-template/blob/master/templates/stop-postgresql-flexible-server.json

```
"Notify": {
"type": "Bool",
"metadata": {
"displayName": "Notify Me",
"description": "Notify me about task status",
"format": "notifier",
"required": false
}
},
"EmailID": {
"defaultValue": "user@microsoft.com",
"type": "String",
"metadata": {
"displayName": "Enter email",
"description": "Notification to be sent to email",
"required": false
}
}
```

Start with templates/stop-postgresql-flexible-server.json and inspect how the Notify and EmailID metadata is represented. Reproduce a portal task submission that omits these values, then compare the portal's validation with the template's required settings. Done means both fields marked required:false can be omitted without submission failure.

Written by the indexing model from the issue text.