Group identify is not working

The group tracking (assigning a group, group properties) does not add data to the events in Amplitude.

## Expected Behavior
The following code should add data to `groups` and `group_properties` field of tracked events, but it does not do that.

```ts
amplitude.setGroup('Workspace', workspaceId)
const groupIdentity = new amplitude.Identify()
groupIdentity.set('workspaceId', workspaceId)
amplitude.groupIdentify('Workspace', workspaceId, groupIdentity, {
user_id: userId,
})

amplitude.track('CTA click', eventProperties, {
user_id: userId,
})
```

## Current Behavior

Since this new library is finally something for JS/Node that has implicitly documented group behavior, I thought it will work better or be less verbose than the older libraries. It turns out there is no group info getting to amplitude. Is there anything that I am missing?

There is nothing in groups and group properties in raw event data:

There is no Group name (Group Type) in [Account lookup](https://analytics.amplitude.com/deepnote/account-activity)

## Possible Solution
I don't know the culprit here, the whole group identity setup is pretty complex, all Amplitude client libraries do it differently, Segment does it differently. I am not sure if the mistake here is just in how the API is being called or there is some functionality not implemented yet.

## Steps to Reproduce
1. Run the code above.
2. Check raw event data in amplitude.

## Environment
- JS SDK Version: 0.4.0
- Installation Method: Yarn (3)
- Browser and Version: Brave 1.42.88