can't use jsonpath that can select the "key" instead of the "value"

I'm trying to chain some requests, and having an issue with jsonpath.

here's my response json:
```
{
"admin": {
"othertoken": "admin's api token"
},
"user": {
"apitoken": "user's api token"
}
}
```

on [jsonpath.com](https://jsonpath.com/), I can use `$.user.*~` to select `apitoken` for the user. however, there doesn't seem to be a way to select `apitoken` and use that in a follow up request in insomnia.

is support for the ~ operator something that could be added?

No source file, test, or entry point is identified in the issue. Start by locating Insomnia’s JSONPath evaluation and request-chaining entry points, then check how `$.user.*~` is handled; done means the `apitoken` key can be passed into a follow-up request and the behavior is covered by a regression test.

Written by the indexing model from the issue text.