test(environment): expose TransferStream and make test environments consistent

[shaejaz]

Summary
This PR adds a new custom jest environment where some missing APIs for the Chat widgets are added.

Changes:

• Replaced all jsdom usage to the new custom env.
• Removed the jsdom-global package as its functionality has been integrated into the new custom env.
• Added a new custom node env and set that to the default jest env.

[codesandbox-ci]

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Latest deployment of this branch, based on commit 2d872ff:

Sandbox	Source
example-instantsearch-getting-started	Configuration
example-react-instantsearch-getting-started	Configuration
example-react-instantsearch-next-app-dir-example	Configuration
example-react-instantsearch-next-routing-example	Configuration
example-vue-instantsearch-getting-started	Configuration

[Haroenv]

lgtm when green.

In a followup PR we may be able to check if we could add some sort of alias to make the environment shorter to write