expose the "comment" an approver made inside the Approval Policy payload

eg:
```

"reviews": {

"current": {

"approvals": [{

"author": "some-user",
// Add this
comment: “OVERRIDE because I know better”,
// End Add
…

"session": {

…

"login": "some-user",

"teams": ["Special Group"]

},
…
}],

"rejections": []

},

},

```